Spamming horror

From: uncle_seb (uncle_seb@hushmail.com)
Date: 03/13/02 

From: uncle_seb@hushmail.com (uncle_seb)
Date: 13 Mar 2002 14:55:15 -0800

Hello,

Something like four days ago, I started getting strange junk mail on
one of my email accounts. It is strange spam because it was returned
mail that I had not sent myself. In fact, it appears the spammer is
using my account (and certainly lots of others too, alternatively) as
a mime Return-Path.

What was tolerable in the beginning is turning to horror and I don't
want to close that account because of a m0tH3rfUx1ng spammer.

It seems to be a well-organised spamming network, or at least someone
who has hacked machines all around the world because I am getting
"Undelivered mail" messages with exactly the same contents originating
from ISP networks in England, Brasil and Chile, among others.

I could of course dissect SMTP headers and write to
abuse@some-isp-here but if my email-address is in the list of a
professional spamming network, I will have to repeat the same
operation over and over again, complaining everyday to new ISPs.

Should I just filter all returned mail and lose my legitimate returned
mail as well or is there an obvious solution? Please, help. I would
not like to have to close that account, it is very important to me.

Thanks a lot in advance

uncle seb.