I've set a post count limit for members permissions to send PM's to ensure my forum does not continue to get spammed with ads via private message, in doing so though it appears I've accidentally also allowed guests to send PM's and I'm wondering how I disable that?

Thanks in regards.

I don't think that Guests can send private messages. Only forum memers. You can do it on memeber's profile:
Administration Panel => Users & Groups => Users => Search users => A user => => Special admin-only fields => Can send Private Messages : No.
Click Save.

I received one from a guest though. ._.

Ohh. He/She is really a guest. He or she used the Contact link from footer box. It could be very useful sometimes.

So can they send PM's to all my members or just me as the forum owner?

Only to staff members.

That's a relief.

So, is this solved?

Sure. :]

Ah, just notice a useful detail:
If someone use Contact form, she/he don't choose to what staff member send a message. All staff members recieve the same message.

Also when someone uses the contact link, [Contact] should appear in the private message's title.

Thanks guys, consider this solved.

Done

Topic Solved & Locked