I am using a godaddy virtual dedicated server which uses postfix and
spamassassin. It marks the spam with [SPAM] in the subject line but I would
rather it deleted it before going to client.

Anyone know of a way? (I am a software developer and not a server guru but
can find my way around a little bit)

Many thanks.

Hello,
I have various clients using my STMP server to send e-mails. Server
Relay is enabled through their IP.
Last night one of the clients sent several thousand spam emails thus
putting my server in spamcop.net black-list.
Is it possible to block users from sending e-mails that generate
abnormal traffic through postfix configuration, or whether should I
use some other program to control?
Obe.