Each file in this directory is a sample MIME message.  For the most part,
they are completely MIME-compliant.  There are two known spots of non-
compliance:

1.  A couple of messages have "Content-type: X-be2".  This is not quite
MIME, but corresponds to the usage of the widely-used Andrew system, and
you should probably handle it robustly.

2.  A couple of messages don't have "Date" headers, which are required
for RFC 822 messages.

Other than that, any MIME errors are unintentional and should be reported
to nsb@thumper.bellcore.com.