3 Feb 2004 08:07
Re: File upload frustration
Ken Hornstein <kenh <at> cmf.nrl.navy.mil>
2004-02-03 07:07:03 GMT
2004-02-03 07:07:03 GMT
>| Hm. I did some research, and I'm going to have to side with kre on this >| one. RFC 2822 clearly states: >| >| A message-originating SMTP system SHOULD NOT send a message that >| already contains a Return-path header. > >That's actually 2821, I think. Whoops, you're right, my apologies. >It doesn't apply because nmh is not a message originating SMTP system, >it's just a mail user agent. Hm. If you're using the SMTP mts mechanism for nmh, I'd say that it was, actually. I mean, it's speaking the SMTP protocol ... how is that not a "message originator"? It seems to fit the definition of a "originating system" under section 2.8.3 of RFC 2821. >Even if it did apply, a subsequent sentence in the RFC says: > > SMTP servers making final delivery MAY remove Return-path headers > before adding their own. > >So it's harmless if there is a return-path header present before >final delivery. That's why it's SHOULD NOT rather than MUST NOT. >So it is allowed. Allowed, yes. But certainly going against a "SHOULD NOT" is not a recommmended practice (and I've heard repeatedly in the IETF, "SHOULD means it should be a MUST in the next revision"). "Be(Continue reading)


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