Are any other Listmasters noticing a disproportionate percentage of
errors like the following:

>An error occurred while processing file 7097 from [log in to unmask]:
>"Mail message sent to the LISTSERV address Contains invalid RFC822
>fields and could not be parsed successfully".
>
>RFC822 parser messages follow:
>
><W> Incorrect or incomplete address field found and ignored.

...that are caused by users of:

>X-Mailer: Microsoft Internet Mail 4.70.1157

...transmitting commands with a malformed "reply-to" with no ID to
the left of the ampersand, while the right side is the valid domain?

>Reply-To: <@uncle.gov>

These now account for roughly 15% of the bouncemail to Listserv at
this site.  My assumption would be that MS has some default set that
makes it too easy for users to shoot themselves in the foot.

                                                   -Kary