On 12/30/2015 7:45 PM, Alex wrote: > > The docs say reject_unlisted_recipient rejects mail when the recipient > is not listed in the list of valid recipients for its domain class. I > assume this means an IP listed in mynetworks or an entry from the > check_recipient_access list? > > The part I don't understand is, the reject_unlisted_recipient is > before the users/IPs are listed. How does it know which users/IPs are > permissible when it comes so far up in the processing list?
reject_unlisted_recipient is not related to the sender or client IP. When you specify reject_unlisted_recipient, postfix checks to see if postfix controls that domain, and if it does, if the recipient address exists. Nonexistent recipients are rejected. More details in http://www.postfix.org/ADDRESS_CLASS_README.html Other restrictions control what senders or client IPs are acceptable. -- Noel Jones
