I'm trying to update a mailing application to support Sender Policy Framework (SPF), which primarily examines the Return-Path header field to confirm that the sender is authorized to use sending MTA.

Using the witango mail action, I have tried to insert a custom header line, but Witango always over-rides the Return-Path, replacing my Return-Path with the From field. If I try to put the From in the custom header, email action produces a bad envelope with two FROM fields.

It looks like I need to use the <@EMAILSESSION> tag if I use witango, so here are a couple of questions.

1.  Has anyone experienced any 'gotchas'?
2.  Does this tag allow use of the submission port (587)?
3.  Is TLS supported?
4.  Are there any open source TCFs available?

My messages and recipients are already queued in a database, sent out by witango cron; but I could use perl or php as an alternative.

TIA

Bill

William M. Conlon, P.E., Ph.D.
To the Point
2330 Bryant Street
Palo Alto, CA 94301
   vox:  650.327.2175 (direct)
   fax:  650.329.8335
mobile:  650.906.9929
e-mail:  mailto:[EMAIL PROTECTED]
   web:  http://www.tothept.com

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