[ On Tuesday, May 15, 2001 at 20:15:34 (+0100), Philip Hazel wrote: ]
> Subject: Re: [Exim] RFC 2821 and "headers_sender_verify"/"headers_checks_fail"
>
> On Tue, 15 May 2001, Greg A. Woods wrote:
>
> > The autoresponder could use a legal RFC-x822 format group address
> > specification with an empty list, which should prevent any MUA from
> > replying. The group-name can be something like "you can not reply". :-)
>
> RFC 2822 does not allow this, as I read the syntax (omitting the
> obsolete bits):
Drat. You're right of course. 'twas the case in 0822 too:
4.4.1. FROM / RESENT-FROM
[[ .... ]]
In all cases, addresses in the "From" field
must be machine-usable (addr-specs) and may not contain named
lists (groups).
also this:
A.2.7. Agent for member of a committee
[[ .... ]]
Note that the name
of the committee cannot be specified, since <group> names are
not permitted in the From field.
I don't quite understand the rationale, especially given the rules about
Sender:, but that does seem to be the way things are and have been.
(The bit about machine-usable hints to the rules for replying to a
message, of course, but a Reply-To field could override -- it does get
more loop-hole-prone of course....)
--
Greg A. Woods
+1 416 218-0098 VE3TCP <gwoods@???> <woods@???>
Planix, Inc. <woods@???>; Secrets of the Weird <woods@???>
