Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!unmvax!turing.unm.edu!mike From: mike@turing.unm.edu (Michael I. Bushnell) Newsgroups: comp.mail.headers Subject: Re: Mail header wishlist Message-ID: <2179@unmvax.unm.edu> Date: 7 Dec 88 04:16:24 GMT References: <1005@asylum.sf.ca.us><2696@sultra.UUCP> <1320@ksuvax1.cis.ksu.edu> <359@talos.UUCP> Sender: news@unmvax.unm.edu Reply-To: mike@turing.unm.edu Organization: University of No Money, Albuquerque, New Mexico Lines: 62 In-reply-to: kjones@talos.UUCP's message of 2 Dec 88 14:27:20 GMT In article <359@talos.UUCP> kjones@talos.UUCP (Kyle Jones) writes: In Karl Kleinpaste writes: [concerning Bounced-By: header] >That would be unnecessary if mailing lists would all make sure that, >when distributing out to the list's recipients, an Errors-To: >listname-request@listname-host-machine header were included. This works only if everyone runs a mailer that supports this header. There is no mention of Errors-To: in RFC822. Sendmail claims to support this header, but smail (2.5) certainly does not. I say 'claims' because I recently had a mailing list that I run flooded with returned mail from a host running sendmail. An Errors-To: line was present in the message in question. Hmmm...It appears I (who said the same thing as Karl) that you are correct. On the other hand, the Sender: field is unquestionable the proper location for errors to be sent. For my money, the right way to avoid bounced mail hitting an entire mailing list is to make the From: header say -request instead of . This means that recipients must edit the To: line if they want to reply to the list, but that's a small price to pay. Hmmmm...yeah. But then I suspect you will have to manually forward lots of postings from users who didn't manually edit the To: line. The best way is for mail addressed like so: To: mailinglist@foo.bar.bax From: Joe.User@my.machine to be transformed by foo.bar.bax when it resends the mail into Resent-From: mailinglist-request@foo.bar.bax Resent-Sender: mailinglist-request@foo.bar.bax To: mailinglist@foo.bar.bax From: Joe.User@my.machine The mail should be delivered using the Resent-* headers in preference to the originals...according to the RFC. How much you wanna bet that smail and sendmail both don't actually do this right...:-) The best defacto solution is probably to have the mail set to individual list subscribers be addressed To: mailinlist@foo.bar.bax Sender: mailinglist-request@foo.bar.bax From: Joe.User@my.machine Reply-To: mailinglist@foo.bar.bax If you want the from line changed, then go ahead--but you are asking to be filled with pain if you don't fix the Reply-To: line... -- Michael I. Bushnell \ This above all; to thine own self be true HASA - "A" division GIG! \ And it must follow, as the night the day, mike@turing.unm.edu /\ Thou canst not be false to any man. Numquam Gloria Deo / \ Farewell: my blessing season this in thee!