Le vendredi 30 Juillet 2004 02:09, Douglas Otis a écrit :
Not everyone uses a null RFC 2821 MAIL FROM when they bounce.
Determining a bounce then requires RFC 2822 checks of the From or
Subject headers. This is not a solid basis for rejecting a message
however. The act of the bounce is best known by the sender, in this
What about the following idea :
- Suppose that our outgoing SMTP servers encode _all_ of their outgoing MAIL
FROM with SRS, whether or not the message is a forward, and whether or not it
initially comes from our own domain.
- Now we can reject all "bounces" (MAIL FROM: <>) that we would receive, which
RCPT TO: wouldn't be a valid SRS address.
Because if this were a legit bounce, then it would be a reply to one of our
own messages, and would thus go to a valid SRS address.
Looks simple, but what do you think ?
Michel Bouissou <michel(_at_)bouissou(_dot_)net> OpenPGP ID 0xDDE8AC6E