I would like a receive a specific message from a service that has a misconfigured mailgun configuration. Mail-in-a-box is rejecting the messages because the sender is a domain with no MX records. Is there a way to make Mail-in-a-box accept these broken messages either temporarily for this sender in particular?
Hi, thanks for the suggestion. Unfortunately I still get the same NOQUEUE: reject message. I was able to build the db file using postmap (and input mg.vshred.com OK). I tried adding check_sender_access hash:/etc/postfix/sender_access both to smtpd_relay_restrictions and to smtpd_recipient_restrictions.