Every domain has it's aliases for postmaster and abuse. The recipient is mostly a global Tekkie account.
I think, since we updated to version 14, the postmaster alias gets spam which will not moved to the junk mail folder. I see in the header, that the mails where processed by the spam filters and having some score over 10.
They should me moved to the spam folder, right?
A customer added some aliases and the recipients are on a third party mail sender, eg. firstname.lastname@example.org goes to email@example.com. Incoming mails will be checked for spam, but they will forwarded. Logical to me. Smartermail has no target to to redirect the spam mails. How can i combat this? Yes, the best solution would be to stop aliases like this. I don't like them either and alias like this are a great chance to get blacklisted too.