home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!gatech!paladin.american.edu!howland.reston.ans.net!zaphod.mps.ohio-state.edu!uwm.edu!lll-winken!ptavv.llnl.gov!oberman
- From: oberman@ptavv.llnl.gov
- Newsgroups: comp.mail.headers
- Subject: Re: Headers??? How many formats?
- Message-ID: <1993Jan25.143459.1@ptavv.llnl.gov>
- Date: 25 Jan 93 22:34:59 GMT
- References: <1jh8mbINNqlb@daisy.ee.und.ac.za> <1993Jan19.193144.3580@netcom.com> <1993Jan19.211424.9632@news.csuohio.edu> <1993Jan21.234753.20583@blilly.uucp>
- Sender: usenet@lll-winken.LLNL.GOV
- Lines: 53
- Nntp-Posting-Host: ptavv.llnl.gov
-
- In article <1993Jan21.234753.20583@blilly.uucp>, bruce@blilly.uucp (Bruce Lilly) writes:
- > In article <1993Jan19.211424.9632@news.csuohio.edu>,
- > posted to comp.mail.headers,
- > damin@ullman.cba.csuohio.edu (Greg Boehnlein) wrote:
- >> Once the mail was AT these locations, it
- >>was my job to pick up the mail files in their original format, download
- >>them to our gateway machines, parse and distribute them, converting in the
- >>process between the Internet (RFC 822) standards and our FutureNet standards.
- >
- > mail != files.
- >
- > In order to deliver the messages, you don't want to look at the headers, you
- > want to look at the envelope address. The same applies to the return
- > address; it comes from the envelope, not the headers.
- >
- > It is perfectly legal to have a message with no To: header and an empty Bcc:
- > header.
- >
- > If you must deal with the message as a stream of characters (or a disk
- > file), I'd recommend using an SMTP-formatted message, where the envelope
- > addresses are contained in the SMTP MAIL FROM (or SAML/SOML/SEND FROM) and
- > RCPT TO commands. This is sometimes called batched SMTP. RFC821 (as amended
- > by RFC1123) is the SMTP specification.
-
- Things are getting closer to the truth. The address to whom mail is delivered
- is, indeed, the envelope address which is not part of the message. This can
- lead to some strange messages when the To: line and the envelope differ, but it
- is NOT unusual.
-
- The reply address MAY be the envelope "from" address, but not necessarily. The
- order of prefererence for reply is rather long, but LOTS of header fields take
- precidence over the envelope. RFC-822 is quite fuzzy on this, but there can be
- no question that some fields (e.g. "Reply-To:) must be deferred to. Simply
- using the envelope "from" field for replys is NOT adequate. The commercial
- mailer I use determines the corrrect address for replys in the order:
-
- Resent-Reply-To:
- Resent-From:
- Reply-To:
- From:
- Resent-Sender:
- Sender:
- envelope "from" address
-
- The envelope "from" is pretty much reserved for occasions when there is no
- useful header information. The RFCs are NOT clear on this order, so some
- mailers may vary.
-
- R. Kevin Oberman Lawrence Livermore National Laboratory
- Internet: koberman@llnl.gov (510) 422-6955
-
- Disclaimer: Don't take this too seriously. I just like to improve my typing
- and probably don't really know anything useful about anything.
-