[cobalt-users] [RaQ3i] spam-relay!?

[Theodore Jones <theoj@xxxxxxxxxxxxx>]

Hey folks,

I'm getting a report from one of my client subdomains on my server that 
he's receiving weird emails from somebody, with my server's main 
domain-name tacked on ala:

	From: "Hahaha" <hahaha@xxxxxxxxxxxxxxxxxxxxxxxx> <mailto:hahaha@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
What could be going on here?  I looked through the maillog for the day 
in question when this was sent/recieved, but couldn't dredge up any 
"sexyfun.net" domain from all the lines...

How can I best tell if I am being used as a spam relay?

Thanks much all,

~ Theo