On Thu, Oct 16, 2008 at 10:45:53AM -0400, Wietse Venema wrote: > DESCRIPTION > This document describes access control on remote SMTP client informa- > tion: host names, network addresses, and envelope sender or recipient > addresses; it is implemented by the Postfix SMTP server. > > Thus, it takes Postfix's idea of the client host name and compares > that name against the string "domain.tld".
That can't be the whole story though, because the map can also check by IP address. I assumed the map did the DNS lookup itself; perhaps this isn't true and instead smtpd calls the map twice, once with the DNS name and once with the IP address? Thanks for your response.
