PHP 没有本机邮件的PHP邮件发件人（）

Posted 2021-05-14

// modified to provide authenticated logins
function mymail($to,$subject,$message,$headers)
{

  // set as global variable
  global $GLOBAL;
 
  // get From address
  if ( preg_match("/From:.*?[A-Za-z0-9\._%-]+\@[A-Za-z0-9\._%-]+.*/", $headers, $froms) ) {
     preg_match("/[A-Za-z0-9\._%-]+\@[A-Za-z0-9\._%-]+/", $froms[0], $fromarr);
     $from = $fromarr[0];
  }

  // Open an SMTP connection
  $cp = fsockopen ($GLOBAL["SMTP_SERVER"], $GLOBAL["SMTP_PORT"], &$errno, &$errstr, 1);
  if (!$cp)
   return "Failed to even make a connection";
  $res=fgets($cp,256);
  if(substr($res,0,3) != "220") return "Failed to connect";

  // Say hello...
  fputs($cp, "HELO ".$GLOBAL["SMTP_SERVER"]."\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "250") return "Failed to Introduce";
 
  // perform authentication
  fputs($cp, "auth login\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "334") return "Failed to Initiate Authentication";
 
  fputs($cp, base64_encode($GLOBAL["SMTP_USERNAME"])."\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "334") return "Failed to Provide Username for Authentication";
 
  fputs($cp, base64_encode($GLOBAL["SMTP_PASSWORD"])."\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "235") return "Failed to Authenticate";

  // Mail from...
  fputs($cp, "MAIL FROM: <$from>\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "250") return "MAIL FROM failed";

  // Rcpt to...
  fputs($cp, "RCPT TO: <$to>\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "250") return "RCPT TO failed";

  // Data...
  fputs($cp, "DATA\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "354") return "DATA failed";

  // Send To:, From:, Subject:, other headers, blank line, message, and finish
  // with a period on its own line (for end of message)
  fputs($cp, "To: $to\r\nFrom: $from\r\nSubject: $subject\r\n$headers\r\n\r\n$message\r\n.\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "250") return "Message Body Failed";

  // ...And time to quit...
  fputs($cp,"QUIT\r\n");
  $res=fgets($cp,256);
  if(substr($res,0,3) != "221") return "QUIT failed";

  return true;
}