Some time in the last two weeks, someone posted to either this list of
BugTraq about the idea of breaking up a message into multiple fragments
to bypass content filtering, relying on the MUA to reassemble the
fragments.
Does anyone have any references?
I've finally got exim4 + exiscan on my mail gateway, so once I know what
MIME header to look for, I'm sure blocking fragmented messages will be a
piece of cake.