Spam being sent from main account

Robin V

Registered
Nov 2, 2016
1
0
1
Netherlands
cPanel Access Level
Root Administrator
Hi,

On one of my servers the main account of a user is being used to send spam.
I already changed the password of the main user but still delivery report show that the server tries to relay mails via that user.
Is there a way to block the main account from sending mails?

The account being used is not [email protected] but the main account I created in whm for that user.