Problem with user

[groomy]

Hi, have this message with a account in DA

There have been 23225 outgoing emails yesterday from the webamax User account.
There could be a spammer, the account could be compromised, or just sending more emails than usual.

This warning was generated because the 1000 email threshold was passed.

I activate spammassassin and what i do for this error ?
Thanks

PS : I change the password...

 

[zEitEr]

Hello,

- My server is sending spam. What do I do?
http://help.directadmin.com/item.php?id=455