-o mynetworks=127.0.0.0/8
-o receive_override_options=no_unknown_recipient_checks
+smtp-forward unix - - n - - smtp -o smtp_bind_address=18.102.208.11
+smtp-local unix - - n - - smtp -o smtp_bind_address=18.102.208.44
+
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay unix - - - - - smtp
-o smtp_fallback_relay=