Modifying What Guest Can & Can't Do?

Where do I go on the admin panel to be able to change something like this? Or is something like this even possible? On my forum there's a user that we deleted the account he's got and somehow he's able to be on a guest account and still PM us. Where can I go, if anywhere, to restrict/modify the things guest can or can't do? As we would like to make it where guest can't send PM's. Is this possible? Any help would greatly be appreciated.

Forum url: http://xwlleague.forumotion.com/

Guests can't actually PM, what they've done is use the contact form at the bottom of the forum to send a message to admins/moderators.

You can change this by going to ACP --> General --> Messages and Emails --> e-mails and contact form --> Modify the settings to what you wish.

Alright. I figured as much. Disabled it so then that should stop that from happening. Appreciate the help.

Glad I could help

Topic Solved and Locked