Kmail weirdness

[aluminumsulfate at earthlink.net]

   From: "Kjel Anderson" <kjel.anderson at gmail.com>
   Date: Mon, 9 Oct 2006 12:17:48 -0400

   Hey everyone,

   I am having a weird problem with Kmail. When it connects to my pop server,
   it sees the mail, but thinks that it has 0 size. It doesn't do this for
   every message, it seems like it happens a few times a day. I tried
   Thunderbird email, and it does not exhibit this problem. The mail server is
   at Pair networks, and they are scratching their heads as well. Any tips on
   how to start debugging this would be apprecitated.

I would fire up tcpdump and capture -s 0 src or dst port 110 to a file
and look at the protocol messages.  I once had a problem with
fetchmail+$MTA on Red Hat, which caused delivery to choke on message
with certain SIZE= values.