A quick look at your header reveals:
> Content-Type: text/plain; charset=ISO-8859-8
Oops. Change that to ISO-8859-1 and things might work better. YARN
thinks you are writing in Hebrew.
> I'm using yarn 0.92 for dos. Can someone please explain to me
> why all messages sent from yarn come over as mime attachments?
> These are not files--they're e-mail messages. WHen I send from
> PIne or ccmail, this does not happen. Thanks.