On Sat, Jul 13, 2002 at 10:08:52PM -0500, David T-G wrote: | ...and then Derrick 'dman' Hudson said...
| % Oh, actually, the entire envelope is changed. I think David meant to | % write "headers" -- | % nothing in the message headers (or body) is changed, and new | % headers are added | | Hmmm... Perhaps I've misunderstood envelope; I thought that it was all | of the headers. No, the envelope normally isn't in the headers at all. It will only appear there if you configure your MTA to add 'Return-Path:' and 'Envelope-To:' headers. Here's an example of an SMTP session (eg one for a message bounced by mutt), but with some of the longer content remove for the sake of this mailing list. 220 ns.gbnet.net ESMTP EHLO dman.ddts.net 250-ns.gbnet.net 250-PIPELINING 250 8BITMIME MAIL FROM:<[EMAIL PROTECTED]> 250 ok RCPT TO:<[EMAIL PROTECTED]> 250 ok DATA 354 go ahead Received: (all received headers remain, but snipped in this example) Date: Sat, 13 Jul 2002 22:08:52 -0500 From: David T-G <[EMAIL PROTECTED]> To: Undisclosed-Recipient:; Message-ID: <[EMAIL PROTECTED]> Mime-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.4i Precedence: bulk List-Unsubscribe: <mailto:[EMAIL PROTECTED]?body=unsubscribe> Subject: Re: bouncing w/ mutt-1.3.28i Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="Ah9ph+G2cWRpKogL" [body of the message] . 250 OK QUIT 221 ns.gbnet.net closing connection In this case, the envelope sender is <[EMAIL PROTECTED]> and the envelope recipient is <[EMAIL PROTECTED]>. The envelope is the data in the SMTP dialog. The headers are part of the "DATA" segment of the SMTP transfer. As far as SMTP is concerned, headers and body are all part of "the message" and are a (mostly) a black box. The envelope and the headers often correspond, but don't always (and in the case of spam, often have no relationship at all). -D -- If you hold to [Jesus'] teaching, you are really [Jesus'] disciples. Then you will know the truth, and the truth will set you free. John 8:31-32 http://dman.ddts.net/~dman/
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