I have mail relaying enabled for two domains on my server. I cannot send mail from domain A to domain B. The error message I get back states that the user is unknown. I can successfully send mail to domain B from domains outside the Virtualmin server just fine. I can also send from Domain B to Domain A without any problems. Any thoughts on where I can start?
The user you attempted to email from domain A – is that the same user you can successfully email from the outside world?
You may want to take a peek at the email logs in /var/log, they may have more details for you regarding the issue.
Thanks for the reply. I’ve since found out that it wasn’t mail to all users, but only one specific user I was testing with. I’ve got to dig a little deeper to see what the overall issue with that user is, but for now I’m good. I will check the logs and see if there is anything there the next time I go to test for that user.