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transport_check.php
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transport_check.php
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<?php
require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/prerequisites.inc.php';
require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/vars.inc.php';
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;
error_reporting(0);
if (isset($_SESSION['mailcow_cc_role']) && $_SESSION['mailcow_cc_role'] == "admin") {
$transport_id = intval($_GET['transport_id']);
$transport_type = $_GET['transport_type'];
if (isset($_GET['mail_from']) && filter_var($_GET['mail_from'], FILTER_VALIDATE_EMAIL)) {
$mail_from = $_GET['mail_from'];
}
else {
$mail_from = "relay@example.org";
}
if (isset($_GET['mail_rcpt']) && filter_var($_GET['mail_rcpt'], FILTER_VALIDATE_EMAIL)) {
$mail_rcpt = $_GET['mail_rcpt'];
}
else {
$mail_rcpt = "null@hosted.mailcow.de";
}
if ($transport_type == 'transport-map') {
$transport_details = transport('details', $transport_id);
$nexthop = $transport_details['nexthop'];
}
elseif ($transport_type == 'sender-dependent') {
$transport_details = relayhost('details', $transport_id);
$nexthop = $transport_details['hostname'];
}
if (!empty($transport_details)) {
// Remove [ and ]
$hostname_w_port = preg_replace('/\[|\]/', '', $nexthop);
preg_match('/\[.+\](:.+)/', $nexthop, $hostname_port_match);
preg_match('/\[\d\.\d\.\d\.\d\](:.+)/', $nexthop, $ipv4_port_match);
$has_bracket_and_port = (isset($hostname_port_match[1])) ? true : false;
$is_ipv4_and_has_port = (isset($ipv4_port_match[1])) ? true : false;
$skip_lookup_mx = strpos($nexthop, '[');
// Explode to hostname and port
if ($has_bracket_and_port) {
$port = substr($hostname_w_port, strrpos($hostname_w_port, ':') + 1);
$hostname = preg_replace('/'. preg_quote(':' . $port, '/') . '$/', '', $hostname_w_port);
if (filter_var($hostname, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
$hostname = '[' . $hostname . ']';
}
}
else {
if ($is_ipv4_and_has_port) {
$port = substr($hostname_w_port, strrpos($hostname_w_port, ':') + 1);
$hostname = preg_replace('/'. preg_quote(':' . $port, '/') . '$/', '', $hostname_w_port);
}
if (filter_var($hostname_w_port, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
$hostname = $hostname_w_port;
$port = null;
}
elseif (filter_var($hostname_w_port, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
$hostname = '[' . $hostname_w_port . ']';
$port = null;
}
else {
$hostname = preg_replace('/'. preg_quote(':' . $port, '/') . '$/', '', $hostname_w_port);
$port = null;
}
}
// Try to get MX if host is not [host]
if ($skip_lookup_mx === false) {
getmxrr($hostname, $mx_records, $mx_weight);
if (!empty($mx_records)) {
for ($i = 0; $i < count($mx_records); $i++) {
$mxs[$mx_records[$i]] = $mx_weight[$i];
}
asort ($mxs);
$records = array_keys($mxs);
echo 'Using first matched primary MX for "' . $hostname . '": ';
$hostname = $records[0];
echo $hostname . '<br>';
}
else {
echo 'No MX records for ' . $hostname . ' were found in DNS, skipping and using hostname as next-hop.<br>';
}
}
// Use port 25 if no port was given
$port = (empty($port)) ? 25 : $port;
$username = $transport_details['username'];
$password = $transport_details['password'];
$mail = new PHPMailer;
$mail->Timeout = 15;
$mail->SMTPOptions = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true
)
);
$mail->SMTPDebug = 3;
// smtp: and smtp_enforced_tls: do not support wrapped tls, todo?
// change postfix map to detect wrapped tls or add a checkbox to toggle wrapped tls
// if ($port == 465) {
// $mail->SMTPSecure = "ssl";
// }
$mail->Debugoutput = function($str, $level) {
foreach(preg_split("/((\r?\n)|(\r\n?)|\n)/", $str) as $line){
if (empty($line)) { continue; }
if (preg_match("/SERVER \-\> CLIENT: 2\d\d.+/i", $line)) {
echo '<span style="color:darkgreen;font-weight:bold">' . htmlspecialchars($line) . '</span><br>';
}
elseif (preg_match("/SERVER \-\> CLIENT: 3\d\d.+/i", $line)) {
echo '<span style="color:lightgreen;font-weight:bold">' . htmlspecialchars($line) . '</span><br>';
}
elseif (preg_match("/SERVER \-\> CLIENT: 4\d\d.+/i", $line)) {
echo '<span style="color:yellow;font-weight:bold">' . htmlspecialchars($line) . '</span><br>';
}
elseif (preg_match("/SERVER \-\> CLIENT: 5\d\d.+/i", $line)) {
echo '<span style="color:red;font-weight:bold">' . htmlspecialchars($line) . '</span><br>';
}
elseif (preg_match("/CLIENT \-\> SERVER:.+/i", $line)) {
echo '<span style="color:#999;font-weight:bold">' . htmlspecialchars($line) . '</span><br>';
}
elseif (preg_match("/^(?!SERVER|CLIENT|Connection:|\)).+$/i", $line)) {
echo '<span>&nbsp;&nbsp;&nbsp;&nbsp;↪ ' . htmlspecialchars($line) . '</span><br>';
}
else {
echo htmlspecialchars($line) . '<br>';
}
}
};
$mail->isSMTP();
$mail->Host = $hostname;
if (!empty($username)) {
$mail->SMTPAuth = true;
$mail->Username = $username;
$mail->Password = $password;
}
$mail->Port = $port;
$mail->setFrom($mail_from, 'Mailer');
$mail->Subject = 'A subject for a SMTP test';
$mail->addAddress($mail_rcpt, 'Joe Null');
$mail->Body = 'This is our test body';
$mail->send();
}
else {
echo "Unknown transport.";
}
}
else {
echo "Permission denied.";
}

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transport_check.php (5 KB)

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