I wrote a sendmail milter that does this, and, indeed...
option 2 is the only way to do it cleanly for all MIME types.
You "save" the original MIME type, etc.
then to declare the message to be multipart/mixed; boundary=xxxxxx
then in the body you do...
--xxxxxx
Content-type: <whatever you saved>
Content-disposition: inline
<original body>
--xxxxxx
Content-type: text/plain
Content-disposition: inline
Your disclaimer or whatever goes here
--xxxxxx--
On Fri, Apr 06, 2001 at 05:22:12PM -0400, Omar Thameen wrote:
> [Resending because I forgot to obfuscate the list command words.]
>
> Greetings:
>
> I'd really like to make sure that every message that is sent out on
> lists that I host has a footer (aka trailer) message which gives
> unzubscribe information. The problem is that in multipart/alternative
> messages (RFC 1521), each of the parts is an "alternative" version of
> the same information.
>
> The gist is that when you add MIME part to the end of the message,
> that's the only thing that gets displayed because of the way MUAs
> are supposed to parse the various parts.
>
> Specifically, the parts are displayed in increasing order of complexity,
> and the MUA is supposed to start from the end and work backwards,
> displaying the first that it can. When you add the text/plain part
> at the end, the MUA displays that and stops, since all MUAs should
> support text/plain.
>
> So my question is whether anyone has dealt with this situation or has
> any suggestions. The options I see are hackish and unsatisfying:
> 1) Adding the footer to all parts of the message. You'd have to limit
> this to text/plain, text/richtext, and text/html.
> 2) Changing the MIME encoding to text/multipart and adding the footer.
> This means that the recipient will view all versions of the message.
>
> Omar
>
>
>
--
/ \__ | Richard Rognlie / Sendmail Samurai / Gamerz.NET Lackey
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\__/ | UNIX does not have a philosophy. It has an attitude.
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