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Plesk Panel - Mailbox Configuration

This could be related to setting for SMTP Authentication?

An MXtoolbox smtp check for your domain seems to be working ok.

This error should place some lines in the error log.

I see you have a webmail DNS entry - can you send through the webmail interface?
 
Do you get any error messages from webmail?

Also, do you have any entries in /var/log/mail.log
 
Last edited:
Don't worry about the reverse dns for the moment. This entry is connected to a PTR record and is usually handled by the owner of the IP Address. It's usually the hostname of the server. This shouldn't effect the sending of mail from the server, just the likely hood that messages are filtered as spam.

Any entries in /var/log/mail.log?
 
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