On 2018-08-27 Stefan Sticht wrote: > I need to block certain combinations of sender/receiver on a postfix > MTA. What would be the best way?
Not sure this is the best way, but I'm using restriction classes for things like that. In main.cf: ----8<---- smtpd_restriction_classes = rc_foo rc_foo = check_sender_access hash:/etc/postfix/foo_sender_access smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination ... check_recipient_access hash:/etc/postfix/recipient_access ... ---->8---- In recipient_access: ----8<---- f...@example.org rc_foo ---->8---- In foo_sender_access: ----8<---- b...@example.com REJECT Mail not accepted. some...@example.net REJECT Mail not accepted. ---->8---- Regards Ansgar Wiechers -- "Abstractions save us time working, but they don't save us time learning." --Joel Spolsky
