Huski - Formmail not working to local address

I have a site that has a formmail script that works to any email address except for the domain it sits on. example... the site is [login to view URL] and if we put any email address like radu[at]huski[dot]com[dot]au they will never get the emails If i use any other email address from, another domain or hotmail, gmail etc.., it works just fine and gets the email. Now the website and email are hosted separately so this is the issue but because host and email admins all cant help any further with this issue, I need this to be fixed through code in the form. If i send emails to radu[at]huski[dot]com[dot]au through an email program it works fine.. It just does not work through the form script. This should be an easy fix for somebody who knows this type of php work