PHP Error – Could Not Execute Mail Delivery Program

Hello!

I have been receiving errors when submitting a form. I’ve attached a screenshot. Could you take a look and let me know what to check out and how to solve the problem?


Attachment:
Screen Shot 2013-03-30 at 12.16.19 PM

Emailing is not working correctly on your server. Please contact your web host with this error message.

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