Failed domain creation: Unable to update domain data: Failed mail post-configuration

When you create a domain in Plesk Panel you get the following error:

Failed domain creation: Unable to update domain data: Failed mail post-configuration: Can't create mail domain service: mailManager->addDomain() failed: mailmng failed: Empty error message from utility.

---------------------- Debug Info -------------------------------
0: htdocs\domains\create_domain.php:160

SOLUTION:

This error occurs because the entry for yourdomain.xxx is already present in the Mail Enable Administrator, to solve this issue do the following:

1. Login to your server
2. Go to MailEnable \ Management \ Messaging Manager \ PostOffices, check the mailbox at this location to make sure that domain name is not already exist, if the domain name is already exist, delete it and then recreate the Domain in Plesk Panel.

Note: Deleting the domain will also delete all the mailboxes.