one domain emails will not send, SO ODD!

[rszkutak]

Nutshell summary is that one domain on a new server will not send, however the other domain on the server is sending fine.

DNS records are clean and correct, website works properly for both sites.

email WAS with office 365 (for the problem domain) but it was "cut" over 24 hours ago and DNS is fully pointing to this server. When we send emails from webmail, iphone or outlook client they simply do not send.

I have disabled and enabled LFD, checked spam filter and disabled / enabled it,

messages do show within the mail queue administration, i try to retry but they don't retry... ha ha

Any help would be appreciate on this issue, i'm perplexed to say the least why it will work with 1 domain and not the other. Also sorry if things don't seem as a cohesive statement here as I am trying to get details here in this thread and make it sound like it's making SOME sense.

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logs

DOVECOT ERRORS
Mar 7 17:26:47 ws3 dovecot[5746]: master: Error: service(imap-login): listen(*, 993) failed: Address already in use
Mar 7 17:26:47 ws3 dovecot[5746]: master: Error: service(imap-login): listen:, 993) failed: Address already in use
Mar 7 17:26:47 ws3 dovecot[5746]: master: Fatal: Failed to start listeners


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+++ 1riIbb-00000003FRf-1OBe has not completed +++
2024-03-07 11:40:57 1riIbb-00000003FRf-1OBe == xxxxxxxxxxxxxxxxxxxxxx R=lookuphost T=remote_smtp defer (110): Connection timed out
2024-03-07 11:40:57 1riIbb-00000003FRf-1OBe == xxxxxxxxxxxxxxxxxxxxxx R=lookuphost T=remote_smtp defer (110): Connection timed out
2024-03-07 12:17:40 1riIbb-00000003FRf-1OBe H=mx-da6.usdoj.gov [2607:f330:6000:1070::5] Network is unreachable
2024-03-07 12:19:50 1riIbb-00000003FRf-1OBe H=mx-da6.usdoj.gov [149.101.180.145] Connection timed out
2024-03-07 12:22:01 1riIbb-00000003FRf-1OBe H=mx-dc2.usdoj.gov [149.101.25.25] Connection timed out


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2024-03-07 18:15:32 socket bind() to port 993 for address (any IPv6) failed: Address already in use: waiting 30s before trying again (7 more tries)
2024-03-07 18:16:02 bind of [:]:993 failed

 

[rszkutak]

i've kinda nailed down the problem is with dovecot and it's not starting at all...

 

[Richard G]

Try to restart it via SSH and if it won't start, post the error message here.

If you got this error again:

Error: service(imap-login): listen(*, 993) failed: Address already in use

then something is already running on port 993, you have to investigate.

For example try with this command:
lsof -i:993
and see what is running on that port.

Sometimes a server reboot can also fix issues.

 

[Stije]

Yes see what else is running on port 993 and also check your /etc/dovecot/conf/ip.conf file

Should be:

listen = *, ::