Try this at home ... but change the imaspammer bit to your own e-mail address
Code:
telnet smtp.ntlworld.com 25
HELO imaspasmmer.com
MAIL FROM: imaspammer@ntlworld.com
RCPT TO: imaspammer@ntlworld.com
DATA
From: Bill Gates <bigbillg@microsoft.com>
To: Milinda Gates <dabossesmissues@microsoft.com>
Subject: Cheep Viagra
I think we ought to buy some!
xxx Big Bill
.
All the mail server cares about is the helo, which could be just about anything.
The MAIL FROM, must be a valid domain name.
The RCPT TO must be a user on ntl's network.
Otherwise anything else is handled by your own e-mail client.