Issue Webmail Login fails and no mails sent after Upgrade to Plesk Obsidian 18.0.71 Update 2

[LordReaper]

Server operating system version

Almalinux 8.1

Plesk version and microupdate number

18.0.71 Update #2

After Update to this newest version i cannot login to webmail and also mails are not sent from one domain. In fact i can make a new mail account and i can send mails from that account. But those mails are also not delivered. The whole Server is not sending any mails after the update. It seems like something is blocking the send. We are using roudncube. How can we fix that?

 

[Kaspar]

Any specific errors or related log entries in the mail log (/var/log/maillog)?

 

[LordReaper]

Logs says everything is fine... The log says all mails are delivered fine. But the mails never come to the recipient. They seem to be stuck somewhere. Before the update everything worked fine.

Aug  5 21:49:32 server postfix-local[14297]: B5B3B19122C7: dmarc: stderr: PASS
Aug  5 21:49:32 server postfix-local[14297]: B5B3B19122C7: arc-sign: stderr: PASS
Aug  5 21:49:32 server postfix-local[14297]: cannot chdir to mailname dir [USERNAME]: No such file or directory
Aug  5 21:49:32 server postfix-local[14297]: B5B3B19122C7: Unknown user: [USERNAME]@[DOMAIN]
Aug  5 21:49:32 server postfix/pipe[14295]: B5B3B19122C7: to=<[USERNAME]@[DOMAIN]>, relay=plesk_virtual, delay=0.57, delays=0.26/0.01/0/0.3, dsn=2.0.0, status=sent (delivered via plesk_virtual service)
Aug  5 21:49:32 server postfix/qmgr[1714]: B5B3B19122C7: removed

 

[Kaspar]

Is the recipient mailbox on the same server or somewhere else?

 

[scsa20]

You can try to repair the mail services using plesk repair mail in a SSH session or going to Tools & Settings > Diagnose & Repair

 

[LordReaper]

I tried to local and extern mailboxes. Both did not work.

 

[LordReaper]

The Diagonse and Repair said that the "check" was "fine" and everyhting healthy. I tried to "repair" and also "no issues detected". I got a spammail now on my gmail account. I will check with a spam test tool if something is wrong.

 

[LordReaper]

Ok Mail-tester.com says its a 10 out of 10. DKIM and Stuff is working fine. So mails are delivered there. It seems that the repair did something and repaired the deilvery of the mails to external mailboxes. I just got an issue now to receive mails on the same server. They are not delivered from [email protected] to [email protected] on the same server. The mails are managed through outlook for domain2.com. Any ideas?