On 3/8/05 8:45 PM, David Gibbs at [EMAIL PROTECTED] wrote: > Sorry if this is a dumb question ... but what header indicates the > "envelope sender"?
None. The "envelope sender" is the return address (MAIL FROM: command) in the dialogue between the upstream mail server and your mail server. Then, think of your mail server as being a very efficient clerk. It receives the mail, opens the envelope, puts what's in the envelope in your inbox, and throws away the envelope. Unfortunately by doing so, the envelope is no longer available to see. Just as the From: header in a message can be easily forged, so can the Envelope Sender. Some (but not all) mail servers will added a pseudo-header before the real header that shows the envelope sender or an additional header with it. I run Postfix and I see it adds both the pseudo-header first (a From line with no colon after From) plus a Return-Path: header which also has the envelope sender in it. Looking at my mailman archives, the pseudo-From is there but not the Return-Path: header. -- Larry Stone [EMAIL PROTECTED] http://www.stonejongleux.com/ ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org Security Policy: http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq01.027.htp
