Re: More questions on smail configuration for SMTP/PPP
email@example.com (Carl V Streeter) wrote on 10.02.96 in <[🔎] 199602102042.OAA05402@hp-47.cae.wisc.edu>:
> Ian Jackson writes:
> > This won't set the return path and is therefore broken.
> I think I'm missing something fundamental, here. Isn't the return-path
> supposed to be set by the last transport agent that delivers the message?
> (RFC 822)
The *field* Return-Path:, yes. The information is there all the time since
passing the *first* transport agent, in the MAIL FROM: envelope field (RFC
822). (And it's called the "return path" even when it's the contents of
> If so, then why won't rewriting the From field make that happy? (or does it
Because the From: field has nothing to do with it. RFC 822 doesn't use it
anywhere; to the receiving MTA, it's just data, like the message body.
> use the received data or something else?)
> Is there an RFC (later than 822) that I should be looking at?
Nope, 822 contains it all, except for some fine tuning not needed for this