note 78010 added to function.mail

I'm having issues with using PHP Mail on one of my servers. It sends but the receiving end it goes into spam folders. It is not like the server is being blocked either as the sender IP is only 3 out of another server i'm using which runs the scripts fine. Any ideas? PHP version perhaps? ---- Server IP: 87.124.64.96 Probable Submitter: 86.137.251.59 ---- Manual Page -- http://www.php.net/manual/en/function.mail.php Edit -- https://master.php.net/note/edit/78010 Del: integrated -- https://master.php.net/note/delete/78010/integrated Del: useless -- https://master.php.net/note/delete/78010/useless Del: bad code -- https://master.php.net/note/delete/78010/bad+code Del: spam -- https://master.php.net/note/delete/78010/spam Del: non-english -- https://master.php.net/note/delete/78010/non-english Del: in docs -- https://master.php.net/note/delete/78010/in+docs Del: other reasons-- https://master.php.net/note/delete/78010 Reject -- https://master.php.net/note/reject/78010 Search -- https://master.php.net/manage/user-notes.php