[Mailman-Users] archives skipping multipart/alternative

[Dan D Niles]

One of my lists recieved a message that was multipart/mixed, with
the first part being multipart/alternative.  So it was something like
this:

multipart/mixed
 |
 +-> multipart/alternative
 |    |
 |    +-> text/plain  (actual message in plain text)
 |    +-> text/html   (actual message in html)
 |
 +-> text/plain (a signature)

When it is archived, it shows:

Skipped content of type multipart/alternative-------------- next part --------------

followed by the signature text.

How do I get the archiver to expand the multipart/alternative part?

Thanks,

Dan