forms - Php header wont allow submission -

i receiving error message "warning: mail(): "sendmail_from" not set in php.ini or custom "from:" header missing in \wdp\dfs\46\8\7\8\4649635878\user\sites\1400094.site\www\mfpt2016\mfpt.php on line 54"

    <?php       $emailsubject = 'mfpt submission';     $webmaster = 'todd@treble-one.com';      $email = $_post['email'];     $firstname = $_request['firstname'];     $lastname = $_request['lastname'];     $organization = $_request['organization'];     $addressline2 = $_request['addressline2'];     $city = $_request['city'];     $stateprovince = $_request['stateprovince'];     $country = $_request['country'];     $zippostalcode = $_request['zippostalcode'];     $telephone = $_request['telephone'];     $title = $_request['title'];     $writtenpaper = $_request['writtenpaper'];     $suggested_conference_session = $_request['suggested_conference_session'];     $suggested_conference_track_other = $_request['suggested_conference_track_other'];     $coauthor = $_request['coauthor'];     $abstract = $_request['abstract'];      $body = <<<eod  email: $email  firstname: $firstname  lastname: $lastname  organization: $organization  addressline1: $addressline1 addressline2: $addressline2 city: $city stateprovince: $stateprovince country: $country zippostalcode: $zippostalcode telephone: $telephone title: $title writtenpaper: $writtenpaper suggested_conference_session: $suggested_conference_session  suggested_conference_track_other: $suggested_conference_track_other coauthor: $coauthor abstract: $abstract comments: $comments  eod;   $host = "mail.treble-one.com";  $username = "todd@treble-one.com";  $password = "*******";  $headers .= 'from: name <mfpt@mfpt.com>' . "\r\n"; $headers = "content=type: text/html\r\n"; $headers = "cc: $email\r\n";   //line 54  $success = mail ($webmaster, $emailsubject, $body,$headers);    print " thank you inquiry in touch shortly.";  ?> 

`

one issue headers see first, append $headers before set, reassign twice.

$headers .= 'from: name <mfpt@mfpt.com>' . "\r\n"; $headers = "content=type: text/html\r\n"; $headers = "cc: $email\r\n"; 

should be:

$headers = 'from: name <mfpt@mfpt.com>' . "\r\n"; $headers .= "content=type: text/html\r\n"; $headers .= "cc: $email\r\n";