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- Xref: sparky comp.mail.headers:402 comp.mail.misc:4189
- Newsgroups: comp.mail.headers,comp.mail.misc
- Path: sparky!uunet!usc!cs.utexas.edu!torn!newshub.ccs.yorku.ca!yorku.ca!davecb
- From: davecb@nexus.yorku.ca (David Collier-Brown)
- Subject: Re: Return-Receipt-To & forwarding...
- Message-ID: <davecb.725910818@yorku.ca>
- Sender: news@newshub.ccs.yorku.ca (USENET News System)
- Organization: York University
- References: <19921225.001@erik.naggum.no> <sdorner-271292095054@0.0.0.0> <davecb.725771350@yorku.ca> <1hv93pINNc85@gaia.ucs.orst.edu>
- Date: Fri, 1 Jan 1993 17:53:38 GMT
- Lines: 26
-
- stanley@skyking.OCE.ORST.EDU (John Stanley) writes:
- |you didn't get a "599 ..." response. You don't even know that such a
- |response wasn't sent, only that you didn't get one. You certainly don't
- |know that the mail you sent was delivered.
-
- Short answer:
- Go read RFC821/2 (and consider yourself insulted).
-
- Long answer:
- Mail is a reliable, end-to-end service, and must
- actively acknowlege both receipt and errors. An
- exception is made for one case (where an error
- indication would be ambiguous), but in that case
- a duty to reurn a mail message with notice of
- the error is imposed.
-
- Gateways which do not support the above are possible
- (the PC-critters are good at that), but no-one claims
- they're standard-conforming.
-
- --dave
- --
- David Collier-Brown, | davecb@CCS.YorkU.CA | lethe!dave
- 72 Abitibi Ave., |
- Willowdale, Ontario, | York Postmaster and
- CANADA. 416-223-8968 | occasional sendfail(8) consultant.
-