Recent changes in the Sarproz Email Server have caused old software versions not being able to automatically send emails.
To automatically send emails, you need to update Sarproz to the newest version.
Use the manage version module to update Sarproz: https://sarproz.com/manual/manage_version.html
If the software cannot connect to the server, write to support at sarproz dot com.
Also the forum had a few days of email blackouts due to this change, but now it is back to normal.