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PHP mail sender without native mail()

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  1. // modified to provide authenticated logins
  2. function mymail($to,$subject,$message,$headers)
  3. {
  4.  
  5.   // set as global variable
  6.   global $GLOBAL;
  7.  
  8.   // get From address
  9.   if ( preg_match("/From:.*?[A-Za-z0-9\._%-]+\@[A-Za-z0-9\._%-]+.*/", $headers, $froms) ) {
  10.      preg_match("/[A-Za-z0-9\._%-]+\@[A-Za-z0-9\._%-]+/", $froms[0], $fromarr);
  11.      $from = $fromarr[0];
  12.   }
  13.  
  14.   // Open an SMTP connection
  15.   $cp = fsockopen ($GLOBAL["SMTP_SERVER"], $GLOBAL["SMTP_PORT"], &$errno, &$errstr, 1);
  16.   if (!$cp)
  17.    return "Failed to even make a connection";
  18.   $res=fgets($cp,256);
  19.   if(substr($res,0,3) != "220") return "Failed to connect";
  20.  
  21.   // Say hello...
  22.   fputs($cp, "HELO ".$GLOBAL["SMTP_SERVER"]."\r\n");
  23.   $res=fgets($cp,256);
  24.   if(substr($res,0,3) != "250") return "Failed to Introduce";
  25.  
  26.   // perform authentication
  27.   fputs($cp, "auth login\r\n");
  28.   $res=fgets($cp,256);
  29.   if(substr($res,0,3) != "334") return "Failed to Initiate Authentication";
  30.  
  31.   fputs($cp, base64_encode($GLOBAL["SMTP_USERNAME"])."\r\n");
  32.   $res=fgets($cp,256);
  33.   if(substr($res,0,3) != "334") return "Failed to Provide Username for Authentication";
  34.  
  35.   fputs($cp, base64_encode($GLOBAL["SMTP_PASSWORD"])."\r\n");
  36.   $res=fgets($cp,256);
  37.   if(substr($res,0,3) != "235") return "Failed to Authenticate";
  38.  
  39.   // Mail from...
  40.   fputs($cp, "MAIL FROM: <$from>\r\n");
  41.   $res=fgets($cp,256);
  42.   if(substr($res,0,3) != "250") return "MAIL FROM failed";
  43.  
  44.   // Rcpt to...
  45.   fputs($cp, "RCPT TO: <$to>\r\n");
  46.   $res=fgets($cp,256);
  47.   if(substr($res,0,3) != "250") return "RCPT TO failed";
  48.  
  49.   // Data...
  50.   fputs($cp, "DATA\r\n");
  51.   $res=fgets($cp,256);
  52.   if(substr($res,0,3) != "354") return "DATA failed";
  53.  
  54.   // Send To:, From:, Subject:, other headers, blank line, message, and finish
  55.   // with a period on its own line (for end of message)
  56.   fputs($cp, "To: $to\r\nFrom: $from\r\nSubject: $subject\r\n$headers\r\n\r\n$message\r\n.\r\n");
  57.   $res=fgets($cp,256);
  58.   if(substr($res,0,3) != "250") return "Message Body Failed";
  59.  
  60.   // ...And time to quit...
  61.   fputs($cp,"QUIT\r\n");
  62.   $res=fgets($cp,256);
  63.   if(substr($res,0,3) != "221") return "QUIT failed";
  64.  
  65.   return true;
  66. }

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