Comment 0 for bug 266543

This patch adds the ability to have all posts
to a mailing list forced into a MIME text/plain
format.

Many mailing lists have a charter which forbids
binary and HTML posts to the list. This patch
allows such a charter to be enforced is a
maximally transparent manner.

The feature is configurable on a per-list basis.
If enabled, all posts to the list are run through a
filter which:

  Squashes multipart messages into a single
flat message (it picks the most plain-text-like
alternative from multipart/alternative entities.)

  Converts 'text/html', 'text/enriched', and
'text/richtext' entities to 'text/plain'.

  Deletes cruft headers from content of type
'message/rfc822'.

  Deletes any uuencoded files from 'text/plain'
entities.

  Entities of any other types are assumed to
be binary attachements are are deleted.

This patch is on mailman-2.0.3.

[http://sourceforge.net/tracker/index.php?func=detail&aid=413752&group_id=103&atid=300103]