Discussion:
[Samba] DNS Suddenly breaking
Garland McAlexander
2016-06-30 08:52:07 UTC
Permalink
Hi All,

I've got a newly created Samba4 domain. I'm running into a strange issue
where my internal DNS on my first domain controller is "breaking" causing
it to not resolve any external hosts. It'll still resolve internal hosts
without issue. This is only on the first DC, the second DC is running
perfectly fine and can access external hosts without issue.

There is absolutely NOTHING in the logs about this. I cannot find where
this is going wrong, and sometimes it seems that it'll randomly fix itself.

Any help is sincerely appreciated.
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L.P.H. van Belle
2016-06-30 09:28:46 UTC
Permalink
Did you create first the dns zones like :

internal.domain.tld
And later
domain.tld

That can be the problem..
If you using bind9 as dns, you can find an error in /var/log/system

Remove domain.tld is the solution.
You need to restart samba/bind to get that fixed.

Greetz,

Louis
-----Oorspronkelijk bericht-----
McAlexander
Verzonden: donderdag 30 juni 2016 10:52
Onderwerp: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm running into a strange issue
where my internal DNS on my first domain controller is "breaking" causing
it to not resolve any external hosts. It'll still resolve internal hosts
without issue. This is only on the first DC, the second DC is running
perfectly fine and can access external hosts without issue.
There is absolutely NOTHING in the logs about this. I cannot find where
this is going wrong, and sometimes it seems that it'll randomly fix itself.
Any help is sincerely appreciated.
--
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Mueller
2016-06-30 09:31:19 UTC
Permalink
What kind of DNS, bind or internal?
With bind an samba 4.3.4 I have an issue and I have to restart bind an avahi:
s4slave named-sdb[8750]: error (connection refused) resolving 'thefreelanceforum.com/AAAA/IN': 192.12.94.30#53.

Only a restart of bind resolves this.


EDV Daniel Müller

Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
Email: ***@tropenklinik.de
www.tropenklinik.de
www.bauen-sie-mit.tropenklinik.de




-----Ursprüngliche Nachricht-----
Von: Garland McAlexander [mailto:***@linear.nyc]
Gesendet: Donnerstag, 30. Juni 2016 10:52
An: ***@lists.samba.org
Betreff: [Samba] DNS Suddenly breaking

Hi All,

I've got a newly created Samba4 domain. I'm running into a strange issue where my internal DNS on my first domain controller is "breaking" causing it to not resolve any external hosts. It'll still resolve internal hosts without issue. This is only on the first DC, the second DC is running perfectly fine and can access external hosts without issue.

There is absolutely NOTHING in the logs about this. I cannot find where this is going wrong, and sometimes it seems that it'll randomly fix itself.

Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
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Garland McAlexander
2016-06-30 12:58:39 UTC
Permalink
It's samba internal DNS. Only one DNS zone, and it's domain.domain.tld.
It'll function perfectly, and then cease to function at a random time.
Post by Mueller
What kind of DNS, bind or internal?
s4slave named-sdb[8750]: error (connection refused) resolving '
thefreelanceforum.com/AAAA/IN': 192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de
www.bauen-sie-mit.tropenklinik.de
-----Ursprüngliche Nachricht-----
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm running into a strange issue
where my internal DNS on my first domain controller is "breaking" causing
it to not resolve any external hosts. It'll still resolve internal hosts
without issue. This is only on the first DC, the second DC is running
perfectly fine and can access external hosts without issue.
There is absolutely NOTHING in the logs about this. I cannot find where
this is going wrong, and sometimes it seems that it'll randomly fix itself.
Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
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mathias dufresne
2016-06-30 13:09:54 UTC
Permalink
To get recursion working with internal DNS you only need to set up:
dns forwarder = <IP of your main DNS>

Is it configured?

If yes and packets can go from your broken DC to "your main DNS" using TCP
and also UDP, there is an issue.
Post by Garland McAlexander
It's samba internal DNS. Only one DNS zone, and it's domain.domain.tld.
It'll function perfectly, and then cease to function at a random time.
Post by Mueller
What kind of DNS, bind or internal?
s4slave named-sdb[8750]: error (connection refused) resolving '
thefreelanceforum.com/AAAA/IN': 192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de
www.bauen-sie-mit.tropenklinik.de
-----Ursprüngliche Nachricht-----
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm running into a strange issue
where my internal DNS on my first domain controller is "breaking" causing
it to not resolve any external hosts. It'll still resolve internal hosts
without issue. This is only on the first DC, the second DC is running
perfectly fine and can access external hosts without issue.
There is absolutely NOTHING in the logs about this. I cannot find where
this is going wrong, and sometimes it seems that it'll randomly fix
itself.
Post by Mueller
Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
--
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Garland McAlexander
2016-06-30 13:25:14 UTC
Permalink
Yes, it's set up with 8.8.8.8

I'm able to ping it without issues, jut not able to resolve anything
externally.
Post by mathias dufresne
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to "your main DNS" using TCP
and also UDP, there is an issue.
Post by Garland McAlexander
It's samba internal DNS. Only one DNS zone, and it's domain.domain.tld.
It'll function perfectly, and then cease to function at a random time.
Post by Mueller
What kind of DNS, bind or internal?
s4slave named-sdb[8750]: error (connection refused) resolving '
thefreelanceforum.com/AAAA/IN': 192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de
www.bauen-sie-mit.tropenklinik.de
-----Ursprüngliche Nachricht-----
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm running into a strange
issue
Post by Mueller
where my internal DNS on my first domain controller is "breaking"
causing
Post by Mueller
it to not resolve any external hosts. It'll still resolve internal hosts
without issue. This is only on the first DC, the second DC is running
perfectly fine and can access external hosts without issue.
There is absolutely NOTHING in the logs about this. I cannot find where
this is going wrong, and sometimes it seems that it'll randomly fix
itself.
Post by Mueller
Any help is sincerely appreciated.
--
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instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
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l***@gmail.com
2016-06-30 13:36:51 UTC
Permalink
Post by Garland McAlexander
Yes, it's set up with 8.8.8.8
I'm able to ping it without issues, jut not able to resolve anything
externally.
Post by mathias dufresne
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to "your main DNS" using TCP
and also UDP, there is an issue.
Post by Garland McAlexander
It's samba internal DNS. Only one DNS zone, and it's domain.domain.tld.
It'll function perfectly, and then cease to function at a random time.
Post by Mueller
What kind of DNS, bind or internal?
s4slave named-sdb[8750]: error (connection refused) resolving '
thefreelanceforum.com/AAAA/IN': 192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de
www.bauen-sie-mit.tropenklinik.de
-----Ursprüngliche Nachricht-----
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm running into a strange
issue
Post by Mueller
where my internal DNS on my first domain controller is "breaking"
causing
Post by Mueller
it to not resolve any external hosts. It'll still resolve internal hosts
without issue. This is only on the first DC, the second DC is running
perfectly fine and can access external hosts without issue.
There is absolutely NOTHING in the logs about this. I cannot find where
this is going wrong, and sometimes it seems that it'll randomly fix
itself.
Post by Mueller
Any help is sincerely appreciated.
--
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instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
--
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Can you post your hosts file, resolv.conf and smb.conf from DC1?
--
-James
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Garland McAlexander
2016-06-30 13:41:37 UTC
Permalink
Hosts:

127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.1.235 bus-ny-dc-01.domain.domain.com bus-ny-dc-01


Resolv:

# Generated by NetworkManager
search domain.domain.com
nameserver 192.168.1.236
nameserver 192.168.1.235

Smb.conf:

# Global parameters
[global]
workgroup = DOMAIN
realm = DOMAIN.DOMAIN.COM
netbios name = BUS-NY-DC-01
server role = active directory domain controller
dns forwarder = 8.8.8.8
printing = bsd
printcap name = /dev/null

[netlogon]
path = /var/lib/samba/sysvol/domain.domain.com/scripts
read only = No

[sysvol]
path = /var/lib/samba/sysvol
read only = No
Post by l***@gmail.com
Post by Garland McAlexander
Yes, it's set up with 8.8.8.8
I'm able to ping it without issues, jut not able to resolve anything
externally.
Post by mathias dufresne
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to "your main DNS" using TCP
and also UDP, there is an issue.
It's samba internal DNS. Only one DNS zone, and it's domain.domain.tld.
Post by Garland McAlexander
It'll function perfectly, and then cease to function at a random time.
What kind of DNS, bind or internal?
Post by Mueller
s4slave named-sdb[8750]: error (connection refused) resolving '
thefreelanceforum.com/AAAA/IN': 192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de
www.bauen-sie-mit.tropenklinik.de
-----Ursprüngliche Nachricht-----
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm running into a strange
issue
Post by Mueller
where my internal DNS on my first domain controller is "breaking"
causing
Post by Mueller
it to not resolve any external hosts. It'll still resolve internal hosts
without issue. This is only on the first DC, the second DC is running
perfectly fine and can access external hosts without issue.
There is absolutely NOTHING in the logs about this. I cannot find where
this is going wrong, and sometimes it seems that it'll randomly fix
itself.
Post by Mueller
Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
--
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instructions: https://lists.samba.org/mailman/options/samba
Can you post your hosts file, resolv.conf and smb.conf from DC1?
--
-James
--
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instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
--
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l***@gmail.com
2016-06-30 13:52:57 UTC
Permalink
Post by Garland McAlexander
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.1.235 bus-ny-dc-01.domain.domain.com
<http://bus-ny-dc-01.domain.domain.com> bus-ny-dc-01
# Generated by NetworkManager
search domain.domain.com <http://domain.domain.com>
nameserver 192.168.1.236
nameserver 192.168.1.235
# Global parameters
[global]
workgroup = DOMAIN
realm = DOMAIN.DOMAIN.COM <http://DOMAIN.DOMAIN.COM>
netbios name = BUS-NY-DC-01
server role = active directory domain controller
dns forwarder = 8.8.8.8
printing = bsd
printcap name = /dev/null
[netlogon]
path = /var/lib/samba/sysvol/domain.domain.com/scripts
<http://domain.domain.com/scripts>
read only = No
[sysvol]
path = /var/lib/samba/sysvol
read only = No
Yes, it's set up with 8.8.8.8
I'm able to ping it without issues, jut not able to resolve anything
externally.
On Thu, Jun 30, 2016 at 9:09 AM, mathias dufresne
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to "your
main DNS" using TCP
and also UDP, there is an issue.
2016-06-30 14:58 GMT+02:00 Garland McAlexander
It's samba internal DNS. Only one DNS zone, and it's
domain.domain.tld.
It'll function perfectly, and then cease to function
at a random time.
On Thu, Jun 30, 2016 at 5:31 AM, Mueller
What kind of DNS, bind or internal?
With bind an samba 4.3.4 I have an issue and I
have to restart bind an
s4slave named-sdb[8750]: error (connection
refused) resolving '
thefreelanceforum.com/AAAA/IN
192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de <http://www.tropenklinik.de>
www.bauen-sie-mit.tropenklinik.de
<http://www.bauen-sie-mit.tropenklinik.de>
-----Ursprüngliche Nachricht-----
Von: Garland McAlexander
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm
running into a strange
issue
where my internal DNS on my first domain
controller is "breaking"
causing
it to not resolve any external hosts. It'll still
resolve internal hosts
without issue. This is only on the first DC, the
second DC is running
perfectly fine and can access external hosts
without issue.
There is absolutely NOTHING in the logs about
this. I cannot find where
this is going wrong, and sometimes it seems that
it'll randomly fix
itself.
Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following
URL and read the
https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198 <tel:212-271-0198>*
*C: 321-315-9948 <tel:321-315-9948>*
--
To unsubscribe from this list go to the following URL
and read the
https://lists.samba.org/mailman/options/samba
Can you post your hosts file, resolv.conf and smb.conf from DC1?
--
-James
--
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instructions: https://lists.samba.org/mailman/options/samba
--
/Sincerely,/
/Garland McAlexander/
/O: 212-271-0198/
/C: 321-315-9948/
Nothing out of the ordinary. Does the issue happen on the server side or
client side? Can you run 'nslookup google.com' from the DC? It should
look similar to this.

nslookup google.com
Server: 192.168.1.236
Address: 192.168.1.236#53

Non-authoritative answer:
Name: google.com
Address: 172.217.2.206

Can you rerun the same if it also happens from the client side?
--
-James
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Garland McAlexander
2016-06-30 13:57:40 UTC
Permalink
nslookup google.com
;; Got recursion not available from 192.168.1.236, trying next server
Server: 192.168.1.235
Address: 192.168.1.235#53

Non-authoritative answer:
Name: google.com
Address: 172.217.4.78


Interesting little bit about the "Recursion not available"
Post by l***@gmail.com
Post by Garland McAlexander
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.1.235 bus-ny-dc-01.domain.domain.com <
http://bus-ny-dc-01.domain.domain.com> bus-ny-dc-01
# Generated by NetworkManager
search domain.domain.com <http://domain.domain.com>
nameserver 192.168.1.236
nameserver 192.168.1.235
# Global parameters
[global]
workgroup = DOMAIN
realm = DOMAIN.DOMAIN.COM <http://DOMAIN.DOMAIN.COM>
netbios name = BUS-NY-DC-01
server role = active directory domain controller
dns forwarder = 8.8.8.8
printing = bsd
printcap name = /dev/null
[netlogon]
path = /var/lib/samba/sysvol/domain.domain.com/scripts <
http://domain.domain.com/scripts>
read only = No
[sysvol]
path = /var/lib/samba/sysvol
read only = No
Yes, it's set up with 8.8.8.8
I'm able to ping it without issues, jut not able to resolve anything
externally.
On Thu, Jun 30, 2016 at 9:09 AM, mathias dufresne
To get recursion working with internal DNS you only need
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to "your
main DNS" using TCP
and also UDP, there is an issue.
2016-06-30 14:58 GMT+02:00 Garland McAlexander
It's samba internal DNS. Only one DNS zone, and it's
domain.domain.tld.
It'll function perfectly, and then cease to function
at a random time.
On Thu, Jun 30, 2016 at 5:31 AM, Mueller
What kind of DNS, bind or internal?
With bind an samba 4.3.4 I have an issue and I
have to restart bind an
s4slave named-sdb[8750]: error (connection
refused) resolving '
thefreelanceforum.com/AAAA/IN
192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de <http://www.tropenklinik.de>
www.bauen-sie-mit.tropenklinik.de
<http://www.bauen-sie-mit.tropenklinik.de>
-----Ursprüngliche Nachricht-----
Von: Garland McAlexander
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm
running into a strange
issue
where my internal DNS on my first domain
controller is "breaking"
causing
it to not resolve any external hosts. It'll still
resolve internal hosts
without issue. This is only on the first DC, the
second DC is running
perfectly fine and can access external hosts
without issue.
There is absolutely NOTHING in the logs about
this. I cannot find where
this is going wrong, and sometimes it seems that
it'll randomly fix
itself.
Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following
URL and read the
https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198 <tel:212-271-0198>*
*C: 321-315-9948 <tel:321-315-9948>*
--
To unsubscribe from this list go to the following URL
and read the
https://lists.samba.org/mailman/options/samba
Can you post your hosts file, resolv.conf and smb.conf from DC1?
-- -James
-- To unsubscribe from this list go to the following URL and read
the
instructions: https://lists.samba.org/mailman/options/samba
--
/Sincerely,/
/Garland McAlexander/
/O: 212-271-0198/
/C: 321-315-9948/
Nothing out of the ordinary. Does the issue happen on the server side or
client side? Can you run 'nslookup google.com' from the DC? It should
look similar to this.
nslookup google.com
Server: 192.168.1.236
Address: 192.168.1.236#53
Name: google.com
Address: 172.217.2.206
Can you rerun the same if it also happens from the client side?
--
-James
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
l***@gmail.com
2016-06-30 13:58:56 UTC
Permalink
nslookup google.com <http://google.com>
;; Got recursion not available from 192.168.1.236, trying next server
Server: 192.168.1.235
Address: 192.168.1.235#53
Name: google.com <http://google.com>
Address: 172.217.4.78
Interesting little bit about the "Recursion not available"
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.1.235 bus-ny-dc-01.domain.domain.com
<http://bus-ny-dc-01.domain.domain.com>
<http://bus-ny-dc-01.domain.domain.com> bus-ny-dc-01
# Generated by NetworkManager
search domain.domain.com <http://domain.domain.com>
<http://domain.domain.com>
nameserver 192.168.1.236
nameserver 192.168.1.235
# Global parameters
[global]
workgroup = DOMAIN
realm = DOMAIN.DOMAIN.COM <http://DOMAIN.DOMAIN.COM>
<http://DOMAIN.DOMAIN.COM>
netbios name = BUS-NY-DC-01
server role = active directory domain controller
dns forwarder = 8.8.8.8
printing = bsd
printcap name = /dev/null
[netlogon]
path = /var/lib/samba/sysvol/domain.domain.com/scripts
<http://domain.domain.com/scripts>
<http://domain.domain.com/scripts>
read only = No
[sysvol]
path = /var/lib/samba/sysvol
read only = No
Yes, it's set up with 8.8.8.8
I'm able to ping it without issues, jut not able to
resolve
anything
externally.
On Thu, Jun 30, 2016 at 9:09 AM, mathias dufresne
To get recursion working with internal DNS you only need
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to "your
main DNS" using TCP
and also UDP, there is an issue.
2016-06-30 14:58 GMT+02:00 Garland McAlexander
It's samba internal DNS. Only one DNS zone, and it's
domain.domain.tld.
It'll function perfectly, and then cease to function
at a random time.
On Thu, Jun 30, 2016 at 5:31 AM, Mueller
What kind of DNS, bind or internal?
With bind an samba 4.3.4 I have an issue and I
have to restart bind an
s4slave named-sdb[8750]: error (connection
refused) resolving '
thefreelanceforum.com/AAAA/IN
<http://thefreelanceforum.com/AAAA/IN>
192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de <http://www.tropenklinik.de>
<http://www.tropenklinik.de>
www.bauen-sie-mit.tropenklinik.de
<http://www.bauen-sie-mit.tropenklinik.de>
<http://www.bauen-sie-mit.tropenklinik.de>
-----Ursprüngliche Nachricht-----
Von: Garland McAlexander
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm
running into a strange
issue
where my internal DNS on my first domain
controller is "breaking"
causing
it to not resolve any external hosts. It'll still
resolve internal hosts
without issue. This is only on the first DC, the
second DC is running
perfectly fine and can access external hosts
without issue.
There is absolutely NOTHING in the logs about
this. I cannot find where
this is going wrong, and sometimes it seems that
it'll randomly fix
itself.
Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following
URL and read the
https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198 <tel:212-271-0198>
<tel:212-271-0198 <tel:212-271-0198>>*
*C: 321-315-9948 <tel:321-315-9948>
<tel:321-315-9948 <tel:321-315-9948>>*
--
To unsubscribe from this list go to the following URL
and read the
https://lists.samba.org/mailman/options/samba
Can you post your hosts file, resolv.conf and smb.conf from DC1?
-- -James
-- To unsubscribe from this list go to the following
URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
/Sincerely,/
/Garland McAlexander/
/O: 212-271-0198 <tel:212-271-0198>/
/C: 321-315-9948 <tel:321-315-9948>/
Nothing out of the ordinary. Does the issue happen on the server
side or client side? Can you run 'nslookup google.com
<http://google.com>' from the DC? It should look similar to this.
nslookup google.com <http://google.com>
Server: 192.168.1.236
Address: 192.168.1.236#53
Name: google.com <http://google.com>
Address: 172.217.2.206
Can you rerun the same if it also happens from the client side?
--
-James
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
/Sincerely,/
/Garland McAlexander/
/O: 212-271-0198/
/C: 321-315-9948/
This tells me the issue is on DC2 and not DC1. Can you post the same
configs from DC2?
--
-James
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
mathias dufresne
2016-06-30 14:11:39 UTC
Permalink
from both DC:
dig google.com
dig @8.8.8.8 google.com

First dig will use resolvers declared into /etc/resolv.conf.
Second dig forces usage of 8.8.8.8.

Both commands should reply the same things, on all DC.
Post by l***@gmail.com
nslookup google.com <http://google.com>
;; Got recursion not available from 192.168.1.236, trying next server
Server: 192.168.1.235
Address: 192.168.1.235#53
Name: google.com <http://google.com>
Address: 172.217.4.78
Interesting little bit about the "Recursion not available"
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.1.235 bus-ny-dc-01.domain.domain.com
<http://bus-ny-dc-01.domain.domain.com>
<http://bus-ny-dc-01.domain.domain.com> bus-ny-dc-01
# Generated by NetworkManager
search domain.domain.com <http://domain.domain.com>
<http://domain.domain.com>
nameserver 192.168.1.236
nameserver 192.168.1.235
# Global parameters
[global]
workgroup = DOMAIN
realm = DOMAIN.DOMAIN.COM <http://DOMAIN.DOMAIN.COM>
<http://DOMAIN.DOMAIN.COM>
netbios name = BUS-NY-DC-01
server role = active directory domain controller
dns forwarder = 8.8.8.8
printing = bsd
printcap name = /dev/null
[netlogon]
path = /var/lib/samba/sysvol/domain.domain.com/scripts
<http://domain.domain.com/scripts>
<http://domain.domain.com/scripts>
read only = No
[sysvol]
path = /var/lib/samba/sysvol
read only = No
Yes, it's set up with 8.8.8.8
I'm able to ping it without issues, jut not able to
resolve
anything
externally.
On Thu, Jun 30, 2016 at 9:09 AM, mathias dufresne
To get recursion working with internal DNS you only need
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to "your
main DNS" using TCP
and also UDP, there is an issue.
2016-06-30 14:58 GMT+02:00 Garland McAlexander
It's samba internal DNS. Only one DNS zone, and it's
domain.domain.tld.
It'll function perfectly, and then cease to function
at a random time.
On Thu, Jun 30, 2016 at 5:31 AM, Mueller
What kind of DNS, bind or internal?
With bind an samba 4.3.4 I have an issue and I
have to restart bind an
s4slave named-sdb[8750]: error (connection
refused) resolving '
thefreelanceforum.com/AAAA/IN
<http://thefreelanceforum.com/AAAA/IN>
192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de <http://www.tropenklinik.de>
<http://www.tropenklinik.de>
www.bauen-sie-mit.tropenklinik.de
<http://www.bauen-sie-mit.tropenklinik.de>
<http://www.bauen-sie-mit.tropenklinik.de>
-----Ursprüngliche Nachricht-----
Von: Garland McAlexander
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm
running into a strange
issue
where my internal DNS on my first domain
controller is "breaking"
causing
it to not resolve any external hosts. It'll still
resolve internal hosts
without issue. This is only on the first DC, the
second DC is running
perfectly fine and can access external hosts
without issue.
There is absolutely NOTHING in the logs about
this. I cannot find where
this is going wrong, and sometimes it seems that
it'll randomly fix
itself.
Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following
URL and read the
https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198 <tel:212-271-0198>
<tel:212-271-0198 <tel:212-271-0198>>*
*C: 321-315-9948 <tel:321-315-9948>
<tel:321-315-9948 <tel:321-315-9948>>*
--
To unsubscribe from this list go to the following URL
and read the
https://lists.samba.org/mailman/options/samba
Can you post your hosts file, resolv.conf and smb.conf from DC1?
-- -James
-- To unsubscribe from this list go to the following
URL and read the
instructions: https://lists.samba.org/mailman/options/samba
-- /Sincerely,/
/Garland McAlexander/
/O: 212-271-0198 <tel:212-271-0198>/
/C: 321-315-9948 <tel:321-315-9948>/
Nothing out of the ordinary. Does the issue happen on the server
side or client side? Can you run 'nslookup google.com
<http://google.com>' from the DC? It should look similar to this.
nslookup google.com <http://google.com>
Server: 192.168.1.236
Address: 192.168.1.236#53
Name: google.com <http://google.com>
Address: 172.217.2.206
Can you rerun the same if it also happens from the client side?
-- -James
-- To unsubscribe from this list go to the following URL and read
the
instructions: https://lists.samba.org/mailman/options/samba
--
/Sincerely,/
/Garland McAlexander/
/O: 212-271-0198/
/C: 321-315-9948/
This tells me the issue is on DC2 and not DC1. Can you post the same
configs from DC2?
--
-James
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
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instructions: https://lists.samba.org/mailman/options/samba
Garland McAlexander
2016-06-30 19:00:07 UTC
Permalink
bus-ny-dc-01 ~]# dig google.com


; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7_2.3 <<>> google.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 779

;; flags: qr rd ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; WARNING: recursion requested but not available


;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 4096

;; QUESTION SECTION:

;google.com. IN A


;; Query time: 0 msec

;; SERVER: 192.168.1.236#53(192.168.1.236)

;; WHEN: Thu Jun 30 14:51:57 EDT 2016

;; MSG SIZE rcvd: 39



----------------


bus-ny-dc-01 ~]# dig @8.8.8.8 google.com


; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7_2.3 <<>> @8.8.8.8 google.com

; (1 server found)

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16101

;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1


;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 512

;; QUESTION SECTION:

;google.com. IN A


;; ANSWER SECTION:

google.com. 39 IN A 172.217.0.46


;; Query time: 19 msec

;; SERVER: 8.8.8.8#53(8.8.8.8)

;; WHEN: Thu Jun 30 14:53:27 EDT 2016

;; MSG SIZE rcvd: 55



---------

bus-ny-dc-02 ~]# dig google.com


; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7_2.3 <<>> google.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39987

;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1


;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 512

;; QUESTION SECTION:

;google.com. IN A


;; ANSWER SECTION:

google.com. 30 IN A 172.217.0.46


;; Query time: 4 msec

;; SERVER: 192.168.1.235#53(192.168.1.235)

;; WHEN: Thu Jun 30 14:55:20 EDT 2016

;; MSG SIZE rcvd: 55


----------


It looks like it's failing at the first dig, but my resolv looks good...
Post by mathias dufresne
dig google.com
First dig will use resolvers declared into /etc/resolv.conf.
Second dig forces usage of 8.8.8.8.
Both commands should reply the same things, on all DC.
Post by l***@gmail.com
nslookup google.com <http://google.com>
;; Got recursion not available from 192.168.1.236, trying next server
Server: 192.168.1.235
Address: 192.168.1.235#53
Name: google.com <http://google.com>
Address: 172.217.4.78
Interesting little bit about the "Recursion not available"
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.1.235 bus-ny-dc-01.domain.domain.com
<http://bus-ny-dc-01.domain.domain.com>
<http://bus-ny-dc-01.domain.domain.com> bus-ny-dc-01
# Generated by NetworkManager
search domain.domain.com <http://domain.domain.com>
<http://domain.domain.com>
nameserver 192.168.1.236
nameserver 192.168.1.235
# Global parameters
[global]
workgroup = DOMAIN
realm = DOMAIN.DOMAIN.COM <http://DOMAIN.DOMAIN.COM>
<http://DOMAIN.DOMAIN.COM>
netbios name = BUS-NY-DC-01
server role = active directory domain controller
dns forwarder = 8.8.8.8
printing = bsd
printcap name = /dev/null
[netlogon]
path = /var/lib/samba/sysvol/domain.domain.com/scripts
<http://domain.domain.com/scripts>
<http://domain.domain.com/scripts>
read only = No
[sysvol]
path = /var/lib/samba/sysvol
read only = No
Yes, it's set up with 8.8.8.8
I'm able to ping it without issues, jut not able to
resolve
anything
externally.
On Thu, Jun 30, 2016 at 9:09 AM, mathias dufresne
To get recursion working with internal DNS you only need
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to
"your
Post by l***@gmail.com
main DNS" using TCP
and also UDP, there is an issue.
2016-06-30 14:58 GMT+02:00 Garland McAlexander
It's samba internal DNS. Only one DNS zone, and it's
domain.domain.tld.
It'll function perfectly, and then cease to function
at a random time.
On Thu, Jun 30, 2016 at 5:31 AM, Mueller
What kind of DNS, bind or internal?
With bind an samba 4.3.4 I have an issue
and I
Post by l***@gmail.com
have to restart bind an
s4slave named-sdb[8750]: error (connection
refused) resolving '
thefreelanceforum.com/AAAA/IN
<http://thefreelanceforum.com/AAAA/IN>
192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de <http://www.tropenklinik.de>
<http://www.tropenklinik.de>
www.bauen-sie-mit.tropenklinik.de
<http://www.bauen-sie-mit.tropenklinik.de>
<http://www.bauen-sie-mit.tropenklinik.de>
-----Ursprüngliche Nachricht-----
Von: Garland McAlexander
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain. I'm
running into a strange
issue
where my internal DNS on my first domain
controller is "breaking"
causing
it to not resolve any external hosts. It'll still
resolve internal hosts
without issue. This is only on the first DC, the
second DC is running
perfectly fine and can access external hosts
without issue.
There is absolutely NOTHING in the logs
about
Post by l***@gmail.com
this. I cannot find where
this is going wrong, and sometimes it seems that
it'll randomly fix
itself.
Any help is sincerely appreciated.
--
To unsubscribe from this list go to the following
URL and read the
https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198 <tel:212-271-0198>
<tel:212-271-0198 <tel:212-271-0198>>*
*C: 321-315-9948 <tel:321-315-9948>
<tel:321-315-9948 <tel:321-315-9948>>*
--
To unsubscribe from this list go to the following URL
and read the
https://lists.samba.org/mailman/options/samba
Can you post your hosts file, resolv.conf and smb.conf from DC1?
-- -James
-- To unsubscribe from this list go to the following
URL and read the
instructions: https://lists.samba.org/mailman/options/samba
-- /Sincerely,/
/Garland McAlexander/
/O: 212-271-0198 <tel:212-271-0198>/
/C: 321-315-9948 <tel:321-315-9948>/
Nothing out of the ordinary. Does the issue happen on the server
side or client side? Can you run 'nslookup google.com
<http://google.com>' from the DC? It should look similar to this.
nslookup google.com <http://google.com>
Server: 192.168.1.236
Address: 192.168.1.236#53
Name: google.com <http://google.com>
Address: 172.217.2.206
Can you rerun the same if it also happens from the client side?
-- -James
-- To unsubscribe from this list go to the following URL and
read
Post by l***@gmail.com
the
instructions: https://lists.samba.org/mailman/options/samba
--
/Sincerely,/
/Garland McAlexander/
/O: 212-271-0198/
/C: 321-315-9948/
This tells me the issue is on DC2 and not DC1. Can you post the same
configs from DC2?
--
-James
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
--
*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198*
*C: 321-315-9948*
--
To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba
mathias dufresne
2016-07-01 09:55:47 UTC
Permalink
Okidoki, you are not blocked by some firewall on both your DC (DC2 is able
to do recursion, DC1 is able to contact google's DNS directly).
The issue comes from your Samba which refuses to do recursion even with
forwarder configured into smb.conf (at least I believe you still have dns
forwarder in smb.conf).

Stupid question: did you tried to reboot DC1?
Post by Garland McAlexander
bus-ny-dc-01 ~]# dig google.com
; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7_2.3 <<>> google.com
;; global options: +cmd
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 779
;; flags: qr rd ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
; EDNS: version: 0, flags:; udp: 4096
;google.com. IN A
;; Query time: 0 msec
;; SERVER: 192.168.1.236#53(192.168.1.236)
;; WHEN: Thu Jun 30 14:51:57 EDT 2016
;; MSG SIZE rcvd: 39
----------------
; (1 server found)
;; global options: +cmd
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16101
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
; EDNS: version: 0, flags:; udp: 512
;google.com. IN A
google.com. 39 IN A 172.217.0.46
;; Query time: 19 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Thu Jun 30 14:53:27 EDT 2016
;; MSG SIZE rcvd: 55
---------
bus-ny-dc-02 ~]# dig google.com
; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7_2.3 <<>> google.com
;; global options: +cmd
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39987
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
; EDNS: version: 0, flags:; udp: 512
;google.com. IN A
google.com. 30 IN A 172.217.0.46
;; Query time: 4 msec
;; SERVER: 192.168.1.235#53(192.168.1.235)
;; WHEN: Thu Jun 30 14:55:20 EDT 2016
;; MSG SIZE rcvd: 55
----------
It looks like it's failing at the first dig, but my resolv looks good...
Post by mathias dufresne
dig google.com
First dig will use resolvers declared into /etc/resolv.conf.
Second dig forces usage of 8.8.8.8.
Both commands should reply the same things, on all DC.
Post by l***@gmail.com
nslookup google.com <http://google.com>
;; Got recursion not available from 192.168.1.236, trying next server
Server: 192.168.1.235
Address: 192.168.1.235#53
Name: google.com <http://google.com>
Address: 172.217.4.78
Interesting little bit about the "Recursion not available"
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain localhost6
localhost6.localdomain6
192.168.1.235 bus-ny-dc-01.domain.domain.com
<http://bus-ny-dc-01.domain.domain.com>
<http://bus-ny-dc-01.domain.domain.com> bus-ny-dc-01
# Generated by NetworkManager
search domain.domain.com <http://domain.domain.com>
<http://domain.domain.com>
nameserver 192.168.1.236
nameserver 192.168.1.235
# Global parameters
[global]
workgroup = DOMAIN
realm = DOMAIN.DOMAIN.COM <http://DOMAIN.DOMAIN.COM>
<http://DOMAIN.DOMAIN.COM>
netbios name = BUS-NY-DC-01
server role = active directory domain controller
dns forwarder = 8.8.8.8
printing = bsd
printcap name = /dev/null
[netlogon]
path = /var/lib/samba/sysvol/domain.domain.com/scripts
<http://domain.domain.com/scripts>
<http://domain.domain.com/scripts>
read only = No
[sysvol]
path = /var/lib/samba/sysvol
read only = No
Yes, it's set up with 8.8.8.8
I'm able to ping it without issues, jut not able to
resolve
anything
externally.
On Thu, Jun 30, 2016 at 9:09 AM, mathias dufresne
To get recursion working with internal DNS you
only need
dns forwarder = <IP of your main DNS>
Is it configured?
If yes and packets can go from your broken DC to
"your
Post by l***@gmail.com
main DNS" using TCP
and also UDP, there is an issue.
2016-06-30 14:58 GMT+02:00 Garland McAlexander
It's samba internal DNS. Only one DNS zone,
and it's
domain.domain.tld.
It'll function perfectly, and then cease to
function
at a random time.
On Thu, Jun 30, 2016 at 5:31 AM, Mueller
What kind of DNS, bind or internal?
With bind an samba 4.3.4 I have an issue
and I
Post by l***@gmail.com
have to restart bind an
s4slave named-sdb[8750]: error (connection
refused) resolving '
thefreelanceforum.com/AAAA/IN
<http://thefreelanceforum.com/AAAA/IN>
192.12.94.30#53.
Only a restart of bind resolves this.
EDV Daniel Müller
Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen
Tel.: 07071/206-463, Fax: 07071/206-499
www.tropenklinik.de <http://www.tropenklinik.de>
<http://www.tropenklinik.de>
www.bauen-sie-mit.tropenklinik.de
<http://www.bauen-sie-mit.tropenklinik.de>
<http://www.bauen-sie-mit.tropenklinik.de>
-----Ursprüngliche Nachricht-----
Von: Garland McAlexander
Gesendet: Donnerstag, 30. Juni 2016 10:52
Betreff: [Samba] DNS Suddenly breaking
Hi All,
I've got a newly created Samba4 domain.
I'm
Post by l***@gmail.com
running into a strange
issue
where my internal DNS on my first domain
controller is "breaking"
causing
it to not resolve any external hosts.
It'll still
resolve internal hosts
without issue. This is only on the first
DC, the
second DC is running
perfectly fine and can access external
hosts
Post by l***@gmail.com
without issue.
There is absolutely NOTHING in the logs
about
Post by l***@gmail.com
this. I cannot find where
this is going wrong, and sometimes it
seems that
it'll randomly fix
itself.
Any help is sincerely appreciated.
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*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198 <tel:212-271-0198>
<tel:212-271-0198 <tel:212-271-0198>>*
*C: 321-315-9948 <tel:321-315-9948>
<tel:321-315-9948 <tel:321-315-9948>>*
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Can you post your hosts file, resolv.conf and smb.conf
from DC1?
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Post by l***@gmail.com
-- /Sincerely,/
/Garland McAlexander/
/O: 212-271-0198 <tel:212-271-0198>/
/C: 321-315-9948 <tel:321-315-9948>/
Nothing out of the ordinary. Does the issue happen on the server
side or client side? Can you run 'nslookup google.com
<http://google.com>' from the DC? It should look similar to this.
nslookup google.com <http://google.com>
Server: 192.168.1.236
Address: 192.168.1.236#53
Name: google.com <http://google.com>
Address: 172.217.2.206
Can you rerun the same if it also happens from the client side?
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Post by l***@gmail.com
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/Sincerely,/
/Garland McAlexander/
/O: 212-271-0198/
/C: 321-315-9948/
This tells me the issue is on DC2 and not DC1. Can you post the same
configs from DC2?
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-James
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*Sincerely,*
*Garland McAlexander*
*O: 212-271-0198 <212-271-0198>*
*C: 321-315-9948 <321-315-9948>*
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mathias dufresne
2016-06-30 11:26:35 UTC
Permalink
Do you have set forwarders into smb.conf on broken DC?
Post by Garland McAlexander
Hi All,
I've got a newly created Samba4 domain. I'm running into a strange issue
where my internal DNS on my first domain controller is "breaking" causing
it to not resolve any external hosts. It'll still resolve internal hosts
without issue. This is only on the first DC, the second DC is running
perfectly fine and can access external hosts without issue.
There is absolutely NOTHING in the logs about this. I cannot find where
this is going wrong, and sometimes it seems that it'll randomly fix itself.
Any help is sincerely appreciated.
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