Re: [exim-dev] Personal condition and mailing list headers

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Author: Philip Hazel
Date:  
To: Michael Haardt
CC: exim-dev
Subject: Re: [exim-dev] Personal condition and mailing list headers
On Thu, 22 Sep 2005, Michael Haardt wrote:

> I am currently checking if the Sieve implementation conforms to
>
> http://www.ietf.org/internet-drafts/draft-ietf-sieve-vacation-03.txt
>
> and found the following:
>
>    Implementations SHOULD NOT respond to any message that contains a
>    "List-Id" [RFC2919], "List-Help", "List-Subscribe", "List-
>    Unsubscribe", "List-Post", "List-Owner" or "List-Archive" [RFC2369]
>    header field.

>
> Exim checks for existance of "List-*" headers, so it actually does more.
> Why?


I cannot remember, but probably because "it seemed like a good idea at
the time".

> In case there are more List headers than those above, it would make sense
> to add them to the above list or even suggest to use "List-*" instead.
> In case there are no more, I would prefer if Exim used exactly that list


I imagine that I imagined that people would keep inventing new List-
header lines, and it seemed sensible to react to any of them. The
feature was added at 4.42 but the ChangLog doesn't give any background.

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book