MyBB Community Forums

I feel really stupid but all of the forums email is being sent from my person gmail address... Why is this? It's obviously spoofed or something because I've never given mybb access to my email.

How do I get mail sent from an address on my domain?

EDIT: I am using SMTP mail through mailgun and my domain is registered/verified on their website.

Thanks for the help.

In Admin CP,
Go to Board Settings » Site Details
Modify the below setting with email you want :-
Admin Email
The administrator's email address. This will be used for outgoing emails sent via the forums.

Thanks for the help