When Plesk mailserver is down or having lots of problems

As i tried to send an important mail and didn’t change anything on my mailsettings on plesk, i was getting nervous.
The only thing i did was an update to plesk, which worked without any error messages.

But when i tried to send a mail, it just handed me generic error messages.
My mail was dead… smtp not working at all. I wasn’t able to send anything anymore.

Here is the SSH command that saved my day and restored all to normal:

/usr/local/psa/admin/sbin/mchk –with-spam

you can also view settings this way:

/usr/local/psa/admin/sbin/mchk –help

With the options
–without-spam restore all mail settings except for your SpamAssassin configuration
–with-spam restore all your mail settings
–spam-only restore only SpamAssassin settings and no mail settings