Got this strange failure message. The IP appears to be mine, but I don't see any "mail to:" addresses that could have triggered this...

(partial headers, NOT FULL SPAM!!)

I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<@epsilon.cesmail.net>:
192.168.1.105 does not like recipient.
Remote host said: 501 #5.1.1 bad address 'TO:<""@epsilon.cesmail.net>'
Giving up on 192.168.1.105.

--- Below this line is a copy of the message.

Return-Path: <x>
Received: (qmail 21284 invoked by uid 99); 12 Jul 2004 22:04:12 -0000
Received: from 65-78-15-32.c3-0.nwt-ubr2.sbo-nwt.ma.cable.rcn.com
(65-78-15-32.c3-0.nwt-ubr2.sbo-nwt.ma.cable.rcn.com [65.78.15.32]) by
webmail.spamcop.net (Horde) with HTTP for <x>;
Mon, 12 Jul 2004 18:04:11 -0400
Message-ID: <20040712180411.0y7i0wkgkcgkg0gk[at]webmail.spamcop.net>
Date: Mon, 12 Jul 2004 18:04:11 -0400
From: x
Reply-to: x
To: andreys[at]etel.ru, pbd[at]urtc.ru, kia[at]urtc.ru, den[at]urtc.ru, fishing[at]etel.ru,
ip-reg[at]urtc.ru, hotline[at]comset.net, postmaster[at]comset.net,
support[at]comset.net, abuse[at]comset.net, abuse[at]wanadoo.fr,
postmaster[at]wanadoo.fr, abuse[at]nic.fr

also posted to NG.

Any thoughts?