Users are not able to log into mailboxes and the following records can be found in the file
plesk courier-imaps: LOGIN FAILED, [email protected], ip=[::ffff:203.0.113.2]
CONFIG_TEXT: dovecot_authdb_plesk: No such user ‘[email protected]‘ in mail authorization database
A domain does not exist in the output of the command
(or the output is empty at all without
# /usr/local/psa/admin/sbin/mail_auth_view | grep example.com
# (empty output)
Manual execution of the utility
on RHEL-based operating systems,
on Debian and Ubuntu) with the Plesk debug logging enabled fails with the following error:
DEBUG [util_exec] [07d041579abfc778c97734f8eb0d4318-0] Finished in 0.0293s, Error code: 1, stdout: , stderr: /opt/psa/admin/bin/mail_auth_dump.worker: Input parse error: Invalid or unsupported Unicode character or escape sequence found in string. UTF8 encoded characters and ‘u’ escape sequences are not supported. Error occured at offset 51062, character ”.
ERR [util_exec] proc_close() failed [‘/opt/psa/admin/bin/mail_auth_dump.worker’ ‘–start’ ‘–finish’] with exit code 
The password of one of the mail accounts contains unsupported symbols like ä, ö, ü, symbols like “♥”, or random sequences with leading “u”.
This repair tool behavior is confirmed as Plesk bug with ID PPPM-10902, which is planned to be fixed in future Plesk updates.
Enable Plesk debug logging (without enabling
Connect to the server via SSH
Execute the utility
RPM-based systems (CentOS, RHEL):
APT-based (Debian, Ubuntu)
In the output find the passwords with
Go to Domains > example.com > Email addresses and change the password for the found mail accounts.
Execute the command to repair mail authorization database:
# /usr/local/psa/admin/sbin/mchk –with-spam