If you look at the code you'll see what's wrong. See that the PHP mail() function is being used. It's returning false, hence the error in your logs. Why is it returning false? It could be a thousand different things. If I were to guess I'd say your server doesn't have a mail server on it.
Error sending product Email to...
kvsHi I nearly have your example PHP working with my .net app, however in testing the email to be sent to the end user with the key, errors, everything else appears to be working.
here is the debug log ...
[10/19/2013 8:47 AM] - SUCCESS :paychecker intiated by 173.0.82.126[10/19/2013 8:47 AM] - SUCCESS :Validating PayPal order 1[10/19/2013 8:47 AM] - SUCCESS :IPN successfully verified.[10/19/2013 8:47 AM] - SUCCESS :Creating product Information to send.[10/19/2013 8:47 AM] - SUCCESS :TODO: Insert array into db:
Array( [quantity_licenses] => 1 [pkey] => *generated key from LimeLM
[pkey_emailed] => 0 [first_name] => *First name correct [last_name] => *Last Email correct => *Email address of purchaser correct) [10/19/2013 8:47 AM] - FAILURE :Error sending product Email to <email address>[10/19/2013 8:47 AM] - SUCCESS :paychecker finished. ------------------------------------------------------------------ is there anything you could suggest as to what the cause is? The email address is valid.Thanks again