Re: [exim] Lookup ASN of sender

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Author: Bob Johannessen
Date:  
To: exim-users
Subject: Re: [exim] Lookup ASN of sender
Jeremy Harris wrote:
> Tony Finch wrote:
>> Before setting this option you should read RFC 2821 which specifies the
>> syntax of received headers. Yours is bogus in many ways.
>
> That's a shame - if I read it right, the Received: header is totally
> non-extensible.


If you need a particular format, you can use an X- header
(for example X-Received:). If not, you can include the extra
information in comments. The following Received header has
two comments; "([131.111.8.41])" and "(Exim 4.51-maildialog)".

Received: from sesame.csx.cam.ac.uk ([131.111.8.41])
    by maildialog.com with esmtp (Exim 4.51-maildialog)
    id 1DjzHm-0007lZ-4x
    for bob@???; Sun, 19 Jun 2005 12:52:28 +0000


You can include comments anywhere the grammar allows CFWS
(comment folding white space). Just enclose it in ()s
and make sure the content is valid RFC 2822 ccontent.


    Bob