I'm intrigued

... The only thing there was left for me to do, was to post the exact same script as you provided online. I've done this in the demo (
here). I've created a contact page using the admin, then replaced the generated contact.php with your file (changing the e-mail addresses). It seemed to work and did sent the e-mail to my inbox. But it contained none of the values I entered

. So I went through the script and saw (I think) some irregularities. I changed some $_values[] with $_POST[] and then checked again. That worked and I've sent you an e-mail using the form (all form submission by the way now go to you).
So normally I would now go off blaming your host (

)), but I've seen the error myself and can't ignore the fact that it used to work. On the other hand my example proves that it could work on an identical CCMS installation (1.3.2). The only thing there is left for me to do therefore is to advice you to try another form solution (e.g. the
one I posted last night). I recon that this would require you to do some modifications, but I believe that the script might just be the problem (it uses plenty of obsolete coding).
You could at least try the form solution above (call it test.php) and see whether it works before actually investing time into modifying it.
Sorry I can't be of any further help, but right now I think I've done everything to test your situation.
Cheers!
Xander.