i haven't sent anything from hotmail in months, but i've gotten this email twice and i don't recognize any of the email addresses. anyone know what it is?

The original message was received at Thu, 15 Apr 2004 17:57:00 -0400
(EDT)
from racefaninc.com [66.255.1.26]

----- The following addresses had permanent fatal errors -----
<phayes25@jam.rr.com>
(reason: 550 5.1.1 unknown or illegal alias: phayes25@jam.rr.com)

----- Transcript of session follows -----
... while talking to ms-mta-02-pix.jam.rr.com.:
>>> DATA
<<< 550 5.1.1 unknown or illegal alias: phayes25@jam.rr.com
550 5.1.1 <phayes25@jam.rr.com>... User unknown
<<< 554 5.5.0 No recipients have been specified.