Postfix User: > smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, > reject_unauth_destination
This will be an open relay if all your SMTP mail is logged with the
same client IP address, i.e. your SMTP mail comes from some box
that is in mynetworks, and Postfix never sees the original SMTP
client IP address.
Wietse
