FIX: Can't send emails to other domain users, but can to outside users.

[J.Wick]

If you find yourself unable to send email to other domain users, make sure that you have at least one email address provisioned to that account in order for the mail tab to appear on the subscriptions panel. If have zero email accounts, the mail tab remains hidden, preventing you from turning off the email service for the domain.

Click the mail tab, then "change settings" and un tick the "activate mail service on domain" then click OK.

Also, I was using PostFix originally, but switched to QMail. I doubt this had any affect.

 

[InderS]

Hello,

Yes, You will have to enabled mail service for your domain through plesk panel with the postfix and Qmail, Also you can enabled mail service for your domain through following command

/usr/local/psa/bin/domain -u DOMAINNAME -mail_service true