Problem with sending email form

When you go to the page: Join us, and try to send email form it gives following error:
mail() has been disabled for security reasons in /home/bestofma/public_html/contact/index.php on line 233
I asked from my IT-provider an he gave this answer:
Upon coordinating with our systems administrator, since your website is made of native PHP, you may use open scripts that will not need to undergo native PHP sending mail because unfortunately, the PHP mail() function is disabled by default for security purposes.

What should I do?


This means that your host has disabled the PHP mail() function, which the form requires to send its contents via email. I have no control unfortunately over what your host does. You would need to ask them to enable it for you on your server if you want to use the form stack.

Ok, thanks a lot.