Send ESMTP emails using PHP by direct SMTP -


i have mail server on synology diskstation. want send emails using php php mail function not work. have read synology mail server uses esmtp , php uses sendmail mail function not work , need build message using direct smtp. found this:

<?php function mymail($from, $namefrom, $to, $nameto, $subject, $message) { $smtpserver = "xxx.xxx.xxx.xxx";    $port = "25";                     $timeout = "45";                 // typical timeout. try 45 slow servers $username = "user@example.com"; $password = "secret";            $localhost = "example.com";       $newline = "\r\n"; $secure = 0; $smtpconnect = fsockopen($smtpserver, $port, $errno, $errstr, $timeout); $smtpresponse = fgets($smtpconnect, 4096); if(empty($smtpconnect)) {    $output = "failed connect: $smtpresponse";    echo $output;    return $output; } else {    $logarray['connection'] = "<p>connected to: $smtpresponse";    echo "<p />connection accepted<br>".$smtpresponse."<p />continuing<p />"; } fputs($smtpconnect, "helo $localhost". $newline); $smtpresponse = fgets($smtpconnect, 4096); $logarray['heloresponse2'] = "$smtpresponse"; fputs($smtpconnect,"auth login" . $newline); $smtpresponse = fgets($smtpconnect, 4096); $logarray['authrequest'] = "$smtpresponse"; fputs($smtpconnect, base64_encode($username) . $newline); $smtpresponse = fgets($smtpconnect, 4096); $logarray['authusername'] = "$smtpresponse"; fputs($smtpconnect, base64_encode($password) . $newline); $smtpresponse = fgets($smtpconnect, 4096); $logarray['authpassword'] = "$smtpresponse"; fputs($smtpconnect, "mail from: <$from>" . $newline); $smtpresponse = fgets($smtpconnect, 4096); $logarray['mailfromresponse'] = "$smtpresponse"; fputs($smtpconnect, "rcpt to: <$to>" . $newline); $smtpresponse = fgets($smtpconnect, 4096); $logarray['mailtoresponse'] = "$smtpresponse"; fputs($smtpconnect, "data" . $newline); $smtpresponse = fgets($smtpconnect, 4096); $logarray['data1response'] = "$smtpresponse"; $headers = "mime-version: 1.0" . $newline; $headers .= "content-type: text/html; charset=iso-8859-1" . $newline; $headers .= "to: $nameto <$to>" . $newline; $headers .= "from: $namefrom <$from>" . $newline; fputs($smtpconnect, "to: $to\r\nfrom: $from\r\nsubject: $subject\r\n$headers\r\n\r\n$message\r\n.\r\n"); $smtpresponse = fgets($smtpconnect, 4096); $logarray['data2response'] = "$smtpresponse";  fputs($smtpconnect,"quit" . $newline); $smtpresponse = fgets($smtpconnect, 4096); $logarray['quitresponse'] = "$smtpresponse"; $logarray['quitcode'] = substr($smtpresponse,0,3); fclose($smtpconnect); //a return value of 221 in $retval["quitcode"] success return($logarray); }

and returns:
connection accepted 220 example.com esmtp postfix

continuing
email not arrive. thank help.

note: hostname replaced example.com


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