[ietf-dkim] MLMs and the use of multipart/alternative to preserve original DKIM signature and at the same time add a new DKIM signature

[Ian Eiloart]

--On 3 August 2010 19:34:55 +0200 "Rolf E. Sonneveld" 
<R.E.Sonneveld at sonnection.nl> wrote:

>
> <quote>
> Changes that merely add new header fields, such as those specified by
> [LIST-ID], [LIST-URLS] and [MAIL] are generally the most friendly to
> a DKIM-participating email infrastructure in that their addition by
> an MLM will not affect any existing DKIM signatures unless

So, in an ideal world, mail clients would expose the List-* headers 
(especially the unsubscribe* header) in ways that are useful to the user, 
and obviate the need for MLMs to mess with subject lines and bodies.

*In my view, MLMs are required in UK law to add unsubscribe information in 
a way that users can easily find it. The List-unsubscribe header isn't 
adequate, only because very few clients display it.

-- 
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
For new support requests, see http://www.sussex.ac.uk/its/help/