Question regarding PHP email

Ok here’s the deal. I did a site for a gaming clan, their web host isn’t too good. Actually it stinks, but it comes with their game server account.

Anyway on the contact page there is a php email form. Everything works fine but…

When I recieve the email the from add is: [email protected]

Now, I can’t register an email account with them because i can’t get in touch with them. I’m guessing that is the problem? The fact that I’m using an external email account in the php?