Hi

I have a problem, one of my customers has a computer whos sending spam via outlook, so i would like to know if there is a way to block that single mailbox and not the entire domain or the ip (because the other ppl in the domain is "innocent") so, is there any way to do that?

the only thing that i can do is change the account's password, but i was wondering if there is anything else that can be done.
BTW i already told the customer to clean his computer... but i need some quick and server side solution.

I use WHM + centos

Thanks in advance.