Login fails when I try to login to my mailbox, no matter how. The following error is shown in
Apr 22 11:30:34 example.com pop3d-ssl: IMAP connect from @ [::ffff:10.10.0.10]ERR: LOGIN FAILED, ip=[::ffff:10.10.0.11]
I have already tried to run
mchk with the following command, which lead to an error:
==> Checking for: mail_auth_dump...
Errors occured in mail restore procedure
Some utilities have exited with errors:
/usr/lib64/plesk-9.0/mail_auth_dump manually to check and found the following error:
Unable to query mailnames: MySQL server has gone away
The issue turns out to have been the fact that
wait_timeout was set too low for this server.
# grep wait_timeout /etc/my.cnf
wait_timeout = 300
To resolve the issue:
/etc/my.cnffile and restart mysql server.