Email notifications not sent, when subdomain used
Created by: lazyadmin111
It turned out, that it was not really the fault of the mail system, but the code in Zotlab/Lib/Enotify.php, in particular the code to create the "reply-to" address. It may create an email address which doesn't exist, and thus some mail servers might deny to deliver.
I will try to provide a patch for it.