I have postfix relay server, which relays messages from the internet to an
internal mailserver, but it should only expect messages to known internal
recipients.
However, there is one external server which is allowed to sent to users which
are not defined in the recipient maps (i.e. group addresses). I tried to put
the ip of that server into the mynetworks but the relay check is still
executed. I only want to allow that this one server can sent to specific
"unknown" (group) email addresses, all other senders should still receive the
normal recipient check.
the only way i see is moving from relay_recipient_maps to
smtpd_recipient_restrictions - however i think relay_recipient_maps is the
correct way to check for existing internal users.
Thanks
