I'm running Postfix and LDAP as a virtual domain with virtual users. For every user I add to LDAP, I add firstname.lastname@example.org
to mailAlternateAddress. This way I can send emails to everyone easily.
Is there a way I can setup Postfix or LDAP that it will only except mail going to email@example.com
if it originates from a virtual user at domain.com and bounces email from anyone else?