vbmail() broken

[filburt1]

My test forum won't send e-mails. vbmail() won't work. mail() does.

PHP Code:

switch ($method)
    {
        case "vbmail":
            vbmail($email, $vbphrase['test_vbms_email'], construct_phrase($vbphrase['test_vbms_email_body'], $method), true);
            
            print_table_header($vbphrase['send_test_email'], 1);
    
            print_description_row(construct_phrase($vbphrase['test_email_was_sent'], $email, $method), 1);    
            print_table_break();
            
            break;
        case "mail":
            ob_start();
            mail($email, $vbphrase['test_vbms_email'], construct_phrase($vbphrase['test_vbms_email_body'], $method));
            $contents = ob_get_contents();
            ob_end_clean();
            
            print_table_header($vbphrase['send_test_email'], 1);
            if (empty($contents))
            {
                print_description_row(construct_phrase($vbphrase['test_email_was_sent'], $email, $method), 1);    
            }
            else
            {
                print_description_row(construct_phrase($vbphrase['test_email_failed'], $email, $method), 1);
                print_description_row($contents, 1);
            }
            
            print_table_break();
            
            break;
    } 


Thoughts? I have not set vBulletin to use SMTP so it should fall back to the mail() function which works properly (well, at least it sends something).