Anybody (else) get ping'ed by Comcast about Port 25 emailing?

[Bayard Coolidge]

I got a nastygram from Comcast in my normal e-mail inbox this morning,
warning me that I was considered a spammer and/or that I had a security
problem caused by a virus/bot.

The recommended fix apparently is to move my outbound SMTP to Port 587,
which I have now done.

But, considering that I'm running openSUSE 11.0 and Thunderbird, download
my e-mail using POP, and don't use any of the traditional Unix/Linux mail
systems, I'm wondering what their real agenda is...

Or is this an artifact of the Port 25 stuff that was so heavily discussed
here during the summer? Maybe I've been too prolific in forwarding .wmv's
and other fun stuff to friends and relatives?

Thanks,

Bayard