> As a new listowner, I've noticed that a number of messages written (it
> turned out) in MS IE Mail bounced to me as delivery errors when they were
> replies quoting another message and its header. No other e-mail software
> has had this problem (so far).
>
> I see a reference in the manual to this kind of quote problem. Is there a
> workaround for MS IE users? Is there any other e-mail software that causes
> this type of problem?

It happens with a number of email packages.  You need to educate
your users to delete the old headers from their reply.  It is
possible to turn off the checking with the Loopcheck option in
the list header, but it's not recommended because it can lead
to mail loops.