On Sun, 2007-21-01 at 00:12 +0100, Michael Holzt wrote: > > Unfortunately some systems do accept mails and only then notice > > that they can't deliver them, so I have to accept bounces > > We shall also not forget the roots of qpsmtpd. It is a replacement for > qmail-smtpd and qmail is a major example of a MTA which accepts mail > first and then sends bounce messages, of course with <> as envelope > sender.
Bernstein claims that this is a requirement of RFC 821. He claims that a 200 response is a guarantee that the mail has been received so qmail-queue writes the mail to disk and reads it back. It needs to accept it to do this. -- --gh
