Re: [Exim] RFC 2821 and "headers_sender_verify"/"headers_che…

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Auteur: Suresh Ramasubramanian
Date:  
À: exim-users
Sujet: Re: [Exim] RFC 2821 and "headers_sender_verify"/"headers_checks_fail"
Philip Hazel [exim-users] <15/05/01 08:30 +0100>:

> On Tue, 15 May 2001, Suresh Ramasubramanian wrote:


> > Valid envelope from, and something like autoresponder@dont-reply in the
> > from.
> > At least one ISP I know does that. OK, it's not very elegant, but it works.


> ... and contravenes RFC 2822, as I read it:
>    In all cases, the "From:" field SHOULD NOT contain any mailbox that
>    does not belong to the author(s) of the message.  See also section
>    3.6.3 for more information on forming the destination addresses for a
>    reply.


As the From: field is non-routable anyway, the question becomes moot.
Alternatively, dev-null@$domain (pointing to the obvious place) would be
RFC-legal in this case.

> (2) I suppose one could get into deep philosophical arguments about the
> concept of "belonging" for a non-existent mailbox. :-)


Heh :)

> From: and Date: are now the only two required header lines in a message.
> I think the idea is that From: should give some valid information about
> the origin of the message.


It looks like (with MAIL FROM: <>)

From: do-not-reply@??? ($ISP Autoresponder - Dont Reply)
Reply-To: abuse@$isp

Seems quite ok to me - keeps within the spirit of the clause you quoted
anyway :)

--
Suresh Ramasubramanian <--> mallet <at> efn <dot> org
EMail Sturmbannfuhrer, Lower Middle Class Unix Sysadmin