This is a little off topic for this forum but please bear with me.
I have spent the best part of three days trying to solve this problem and finally I have got a handle on it.
The cause of my problem appears to be OSSEC
The reason I ask here rather than elsewhere is because I wonder if it is related to WM/WM as I can’t find anyone elsewhere with a similar issue. Added to that is the fact that I know others here are running OSSEC because it has been recommended in these illustrious portals. :o)
With OSSEC running customers are unable to collect email from POP3 (IMAP untested). This doesn’t seem to affect everyone on that server (not had any complaints) but I know it affects at least three domains hosted on that box. If I use Pingability.com to test the DNS (also checks some other stuff) I get a number of errors like this :-
Error
Got an error when connecting to ns1.my-server.com/123.123.123.123 with a request for hosted-domain.com/ANY: SocketTimeoutException: Socket timeout on name server 123.123.123.123 for hosted-domain.com.
Error
Got an error when connecting to ns1.my-server.com/123.123.123.123 with a request for ns1.my-server.com/CNAME: SocketTimeoutException: Socket timeout on name server 123.123.123.123 for ns1.my-server.com.
Heads-up
Could not perform the CNAME check. SocketTimeoutException: Socket timeout on name server 123.123.123.123 for ns1.my-server.com. ErrorGot an error when connecting to ns1.my-server.com/123.123.123.123 with a request for hosted-domain.com/SOA: SocketTimeoutException: Socket timeout on name server 123.123.123.123 for hosted-domain.com.
Error
The name server did not return any SOA records. This could indicate a ‘lame’ nameserver - one that is listed as authoratative, but does not return any information for the zone.
Error
Got an error when connecting to ns1.my-server.com/123.123.123.123 with a request for hosted-domain.com/NS: SocketTimeoutException: Socket timeout on name server 123.123.123.123 for hosted-domain.com.
ErrorGot an error when connecting to ns1.my-server.com/123.123.123.123 with a request for www.hosted-domain.com/ANY: SocketTimeoutException: Socket timeout on name server 123.123.123.123 for www.hosted-domain.com.
Error
There was a problem while talking with the mail server. Got ‘SocketTimeoutException: connect timed out’
If I stop OSSEC running, customers don’t have any errors and Pingability reports it all clean.
So, fellow Webminners any ideas ?
Thanks for reading and suffering an off topic post.
Tim
Operating system CentOS Linux 5.7
Webmin version 1.562
Virtualmin version 3.88 Pro