----- Original Message ----- From: Wietse Venema To: Postfix users <postfix-users@postfix.org> Cc: Sent: Tuesday, July 5, 2011 8:38 PM Subject: Re: unverified_recipient_tempfail_action = permit
<snip> >Fundamentally, both approaches rely on talking to the primary MX, >and therefore both approaches would suffer from errors if the >primary MX DNS information is broken, though the errors would not >be identical. > > Wietse That is true but unverified_recipient_tempfail_action = permit would not rely on the sending mta's dns containing valid, up to date A records of the receiving domain's primary and secondary mx servers. Of course, if there is a problem with the actual DNS records of the receiving mta's primary and/or secondary mx machines then all bets are off but that is probably outside the scope of the problem. Charlie
