Author Topic: Backscatter from virtual mailbox aliases  (Read 1935 times)


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Backscatter from virtual mailbox aliases
« on: July 20, 2018, 08:32:46 am »
Our virtual mailbox is:
It has an alias:
Emails sent to (bogus is not a user in the domain) are rejected.
However, emails sent to are bouncing back, thus contributing to backscatter.
It seems the problem is that the map for virtual alias domains is returning a catch-all alias, rather than there being explicit aliases for each user in the virtual domain (so Postfix can reject the mail in the SMTP session).
Any ideas how this can be fixed?