Stopping server relays

[David J Jackson]

Greetings ---
How can I stop my server from being used to relay mail?  
I got an email from a admin somewhere claiming that emails were being
sent from my server with virus attached? It's only me and one other person
has access to this box?

Related question could this be the source of the [EMAIL PROTECTED]
(I set up an .qmail-52 aliases to try to catch these emails)


This question is part of the Forged Emails post I sent eailer from
[EMAIL PROTECTED]


Thanks,
David Jackson