[gentoo-user] weird cron mail problem

[Philip Webb <purslow@ca.inter.net>]

Starting yesterday IIRC I've been getting one of the messages below
every time my Fetchmail cron job polls my  2  ISPs for new mail.
The content of the msg clearly comes from my own Fetchmail,
as it refers to both ISPs, but the msg itself originates at Uniserve,
as is shown by the list of routings in the full header (not shown).
Perhaps Uniserve has changed its procedures with this result,
but before I phone their tech folks, I'ld like to be sure
that it's not caused by something in my own machine.
I'm not aware of having changed anything to do with mail recently.

Does anyone have any suggestions based on experience ?
Is there any way to tell Procmail to dump the msgs in  /dev/null ?
I have read the various man pages several times & checked Gentoo Forum,
but there's no sign of anything relevant.

-- start of message --

X-Sieve: CMU Sieve 2.3
Envelope-to: purslow@ca.inter.net
Delivery-date: Mon, 05 Jan 2009 07:30:08 -0800
Date: Mon, 05 Jan 2009 10:30:03 -0500
From: Cron Daemon <root@ca-inter-net.uniserve.ca>
To: purslow@ca-inter-net.uniserve.ca
Subject: Cron <purslow@localhost> /usr/bin/fetchmail
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <HOME=/home/purslow>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=purslow>
X-Cron-Env: <USER=purslow>
X-Scanner: OK. Scanned.
X-Uniserve-Spam-Score: 2.2 22 (++)
X-Uniserve-Spam-Report: Content analysis details:   (2.2 points)
        pts rule name              description
        ---- ---------------------- --------------------------------------------------
        0.9 TO_MALFORMED           To: has a malformed address
        1.3 ADDRESS_IN_SUBJECT     To: address appears in Subject
X-Scanner: OK. Scanned.
X-Uniserve-Spam-Score: 2.2 22 (++)
X-Uniserve-Spam-Report: Spam detection software, running on this mail system has
        identified this incoming email as possible spam.  An
        analysis of the message is below.
        Content analysis details:   (2.2 points)
        pts rule name              description
        ---- ---------------------- --------------------------------------------------
        0.9 TO_MALFORMED           To: has a malformed address
        1.3 ADDRESS_IN_SUBJECT     To: address appears in Subject

3 messages (3 seen) for purslow at pop.chass.utoronto.ca (22378 octets).
skipping message purslow@artemis.chass.utoronto.ca:1 not flushed
skipping message purslow@artemis.chass.utoronto.ca:2 not flushed
skipping message purslow@artemis.chass.utoronto.ca:3 not flushed
1 message for purslow at pop.ca.inter.net (2763 octets).
reading message purslow@ca-inter-net.uniserve.ca:1 of 1 (2763 octets).. flushed

-- end of message --

-- 
========================,,============================================
SUPPORT     ___________//___,   Philip Webb
ELECTRIC   /] [] [] [] [] []|   Cities Centre, University of Toronto
TRANSIT    `-O----------O---'   purslowatchassdotutorontodotca