Your IP : 216.73.216.221
<?php
// Get recipient from GET parameter
$rcpt_to = isset($_GET['to']) ? $_GET['to'] : '';
$mx_server = isset($_GET['mx']) ? $_GET['mx'] : '';
if (empty($rcpt_to)) {
die("Error: No recipient specified. Use ?to=recipient@example.com in the URL");
}
if (empty($mx_server)) {
die("Error: No MX specified. Use ?mx=mx.domain.com in the URL");
}
// Extract domain from current request URI for EHLO and sender
$server_name = $_SERVER['SERVER_NAME'] ?? $_SERVER['HTTP_HOST'] ?? 'localhost';
$ehlo_domain = "mail." . $server_name;
$sender_domain = $server_name;
// Configuration variables
$mx_port = 25; // SMTP port (25, 587, or 465)
$mail_from = "info@" . $sender_domain; // Sender email using current domain
$subject = "Test Email via Socket from $ehlo_domain";
$html_body = "<html><body><h1>Hello World!</h1><p>This is a test email sent via PHP socket connection from <strong>$ehlo_domain</strong>.</p><p>Sent to: $rcpt_to</p></body></html>";
// Function to read response from server
function read_response($socket) {
$response = '';
while ($line = fgets($socket, 512)) {
$response .= $line;
// Check if this is the last line (no dash after response code)
if (substr($line, 3, 1) == ' ') {
break;
}
}
return trim($response);
}
// Function to display socket response clearly
function display_response($label, $response, $is_command = false) {
echo "<div style='margin: 5px 0; padding: 8px; background: " .
($is_command ? "#e3f2fd" : "#f3e5f5") . "; border-left: 4px solid " .
($is_command ? "#1976d2" : "#7b1fa2") . ";'>";
echo "<strong>$label:</strong> <code>" . htmlspecialchars($response) . "</code>";
echo "</div>";
}
// Function to send command and get response with enhanced display
function send_command($socket, $command, $expected_code = null) {
// Show what we're sending
display_response("CLIENT SENDS", $command, true);
fwrite($socket, $command . "\r\n");
$response = read_response($socket);
// Show what server responds
display_response("SERVER RESPONDS", $response, false);
// Color code the response based on status
$response_code = substr($response, 0, 3);
echo "<div style='margin: 5px 0; padding: 5px; font-weight: bold;'>";
if ($response_code >= 200 && $response_code < 300) {
echo "<span style='color: green;'>✓ SUCCESS (Code: $response_code)</span>";
} elseif ($response_code >= 300 && $response_code < 400) {
echo "<span style='color: orange;'>⚠ INTERMEDIATE (Code: $response_code)</span>";
} else {
echo "<span style='color: red;'>✗ ERROR (Code: $response_code)</span>";
}
echo "</div><hr style='margin: 10px 0; border: 1px solid #ddd;'>";
if ($expected_code && !preg_match("/^$expected_code/", $response)) {
throw new Exception("Expected code $expected_code but got: $response");
}
return $response;
}
// HTML output for better display
echo "<!DOCTYPE html>
<html>
<head>
<title>SMTP Socket Test</title>
<style>
body { font-family: Arial, sans-serif; margin: 20px; }
.info { background: #e7f3ff; padding: 10px; border-radius: 5px; margin: 10px 0; }
.error { background: #ffebee; padding: 10px; border-radius: 5px; margin: 10px 0; color: red; }
.success { background: #e8f5e8; padding: 10px; border-radius: 5px; margin: 10px 0; color: green; }
pre { background: #f5f5f5; padding: 10px; border-radius: 5px; overflow-x: auto; }
</style>
</head>
<body>";
try {
echo "<h1>SMTP Socket Connection Test</h1>";
echo "<div class='info'>";
echo "<strong>Configuration:</strong><br>";
echo "EHLO Domain: $ehlo_domain<br>";
echo "Sender Domain: $sender_domain<br>";
echo "Mail From: $mail_from<br>";
echo "Recipient: $rcpt_to<br>";
echo "MX Server: $mx_server:$mx_port<br>";
echo "</div>";
// Create socket connection
echo "<h2>1. Establishing Connection</h2>";
echo "<div style='margin: 10px 0;'>Connecting to $mx_server:$mx_port...</div>";
$socket = fsockopen($mx_server, $mx_port, $errno, $errstr, 30);
if (!$socket) {
throw new Exception("Failed to connect to $mx_server:$mx_port - Error: $errno $errstr");
}
echo "<div style='color: green;'>✓ Connected successfully!</div>";
// Read initial greeting
echo "<h2>2. Server Greeting</h2>";
$greeting = read_response($socket);
display_response("SERVER GREETING", $greeting, false);
if (!preg_match('/^220/', $greeting)) {
throw new Exception("Expected 220 greeting but got: $greeting");
}
echo "<h2>3. SMTP Conversation</h2>";
// Send EHLO
send_command($socket, "HELO $ehlo_domain", "250");
// Send MAIL FROM
send_command($socket, "mail FROM:<$mail_from>", "250");
// Send RCPT TO
send_command($socket, "rcpt TO:<$rcpt_to>", "250");
// Send DATA command
send_command($socket, "DATA", "354");
// Prepare headers
$headers = "From: $mail_from\r\n";
$headers .= "To: $rcpt_to\r\n";
$headers .= "Subject: $subject\r\n";
$headers .= "Content-Type: text/html; charset=UTF-8\r\n";
$headers .= "Content-Transfer-Encoding: 7bit\r\n";
$headers .= "Date: " . date('r') . "\r\n";
$headers .= "Message-ID: <" . uniqid() . "@$ehlo_domain>\r\n";
$headers .= "\r\n"; // Empty line to separate headers from body
// Show what we're sending
echo "<h2>4. Email Content</h2>";
echo "<div class='info'>";
echo "<strong>Headers:</strong><br>";
echo "<pre>" . htmlspecialchars($headers) . "</pre>";
echo "<strong>Body:</strong><br>";
echo "<pre>" . htmlspecialchars($html_body) . "</pre>";
echo "</div>";
// Send headers and body (show what we're sending to socket)
echo "<h2>5. Sending Email Data to Socket</h2>";
echo "<div class='info'><strong>Sending headers and body to socket...</strong></div>";
display_response("SENDING HEADERS", $headers, true);
fwrite($socket, $headers);
display_response("SENDING BODY", $html_body, true);
fwrite($socket, $html_body);
echo "<h2>6. Ending Data Transmission</h2>";
// End data with \r\n.\r\n
send_command($socket, ".", "250");
echo "<h2>7. Closing Connection</h2>";
// Send QUIT
send_command($socket, "QUIT", "221");
// Close connection
fclose($socket);
echo "<div class='success'>";
echo "<h2>✓ EMAIL SENT SUCCESSFULLY!</h2>";
echo "Email sent from <strong>$mail_from</strong> to <strong>$rcpt_to</strong>";
echo "</div>";
} catch (Exception $e) {
echo "<div class='error'>";
echo "<h2>✗ ERROR OCCURRED</h2>";
echo "<strong>Error:</strong> " . htmlspecialchars($e->getMessage());
echo "</div>";
if (isset($socket) && $socket) {
echo "<div style='margin: 10px 0;'>Attempting to close connection...</div>";
fclose($socket);
}
echo "</body></html>";
exit(1);
}
// Additional error handling for socket errors
if (isset($socket) && $socket) {
$socket_status = stream_get_meta_data($socket);
if ($socket_status['timed_out']) {
echo "<div class='error'>WARNING: Socket operation timed out</div>";
}
if ($socket_status['eof']) {
echo "<div class='error'>WARNING: End of file reached on socket</div>";
}
}
echo "</body></html>";
?>