R P Herrold herrold at owlriver.com
Tue Oct 1 22:02:01 PDT 2002

On Tue, 1 Oct 2002, John D. Hardin wrote:

> I think that Return-Path: may be a sendmail-ism - is the MTA sendmail?



and RFC 2821 sect 4.4 mandatory support required if present:

 When the delivery SMTP server makes the "final delivery" of a 
message, it inserts a return-path line at the beginning of the 
mail data. This use of return-path is required; mail systems 
MUST support it.

-- Russ herrold

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