Autor: Suresh Ramasubramanian Data: A: Exim Users Mailing List Assumpte: Re: [Exim] RFC 2821 and "headers_sender_verify"/"headers_checks_
John Horne [exim-users] <16/05/01 12:46 +0100>: > On 16-May-01 at 08:35:12 Vadim Vygonets wrote:
> > Precedence: headers are not mentioned in any RFC, so depending on
> > these headers is Not A Good Thing[tm]. > Not quite true, Precedence: is listed in RFC 2076 (page 13). However, the
> comment with it states "Non-standard, controversial, discouraged". :-)
Which is not an argument against using home-cooked headers (X-Loop in
several procmail based autoacks, X-Been-There in Mailman, etc). And in such
cases, all you have to do is to suppress bounces on your side when you see
the header.