send a copy of the contact-carmed.php file please.
also, in my initial reply, there are a number of questions that i asked that have gone unanswered.
What have you used for the From Address? Many host require that the from address be a valid email address for your domain.
Make sure the from address you use is not the same as any of the To addresses.
Some hosts will require that you select the option to include the From address as an extra parameter.
What did you enter for the SMTP Server address? Some hosts will require that you enter the SMTP Server address.
I need to know this information in order to help solve the problem.
since the email settings are unique to your server environment, i need to know details about your server environment.