On Tue, 15 Jan 2002 15:18:36 -0500 Jon Carnes <[EMAIL PROTECTED]> wrote:
> Some email systems send "bounces" from some weird addresses (as > apposed to Mailer-Daemon, or some such address). A bounce is sole identified by having a null return address in the envelope, and by nothing else. None of the headers on a message are significant in determining if a given message is a bounce, Not From: not To:, none of them. > As such, Mailman may not be able to interpret that the email is a > bounce. The problem is that Mailman attempts the parse the body of a bounce to determine subscriber address. As the message body format is not standardised this is an error prone process (which also explains the attraction of VERP). > Mailman may simply interpret the mail as a reply. Not if it has a null return-to envelope. Guaranteed. > There is a whole section in Mailman that is devoted to identifying > different types of bounces. The current list includes bounces > from: Compuserve, Exim, Groupwise, Microsoft, Netscape, Postfix, > SMTP, Smail, Yahoo, etc... Right. That's the message body parsing stuff, not the bounce determination code. > But folks use a wild number of differing Mailservers (like Lotus > Notes, Connect2, etc...). If they don't use a standard "bounce" > format, and the bounce format they use has not been added to > ~mailman/Mailman/Bouncers/.. then the message that comes back is > seen as a reply from a user that is not on the list. Nope, not unless the MTA in question grossly violates the RFCs and uses a non-null return address. -- J C Lawrence ---------(*) Satan, oscillate my metallic sonatas. [EMAIL PROTECTED] He lived as a devil, eh? http://www.kanga.nu/~claw/ Evil is a name of a foeman, as I live. ------------------------------------------------------ Mailman-Users maillist - [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/mailman-users
