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Resolved Mails are no longer received and sent Plesk Obsidian 18.0.63 Update #1

hume1991

Basic Pleskian
Server operating system version
Ubuntu 20.4.6 LTS
Plesk version and microupdate number
Plesk Obsidian 18.0.63 Update #1
he system was updated to Plesk Obsidian 18.0.63 Update #1, and packages were updated via Plesk beforehand. Through SSH, apt-get update, apt-get upgrade, and apt-get dist-upgrade were executed. The kernel was updated to 5.4.0-192-generic, and the system was rebooted using shutdown 0 -r. After the reboot, the issue occurred. The procedure with apt-get update, apt-get upgrade, and apt-get dist-upgrade had been performed in the past without any problems. plesk repair reported no errors, stating that everything was fine. The following appears in the Maillog:

courier-pop3s: /usr/lib/couriertcpd: Invalid option: -noidentlookupcourier-pop3d: /usr/lib/couriertcpd: Invalid option: -noidentlookupcourier-imapd: /usr/lib/couriertcpd: Invalid option: -noidentlookupcourier-imaps: /usr/lib/couriertcpd: Invalid option: -noidentlookup

A full backup was restored because the error could not be traced to any specific cause.

Are there any known issues related to this, and is there anything that can be done to resolve it?

Best regards

hume1991
 
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