I have searched for this problem, but I have not found an answer.
My users prefer to user the email@example.com style login to the server. In past installations this has not been an issue. In my most recent installation, I am having a problem with aliases delivering.
This is the mail system at host domain.tld.
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system
Do I just have to abandon the firstname.lastname@example.org logins completely. All aliases were created using Virtualmin, so I do not understand why it is not able to find them.
Alias1 and Alias3 deliver to email addresses one in domain.tld the other @yahoo.com
I can user a mailing list for this, but I preferred not to.
Thanks for your help.