What steps can be taken to troubleshoot a server that is no longer sending emails?

To troubleshoot a server that is no longer sending emails, you can check the email server settings, ensure that the email service is running properly, check for any error messages in the server logs, and test sending emails from different email clients or scripts. 

// Check email server settings
$host = 'mail.example.com';
$port = 25;
$username = 'user@example.com';
$password = 'password';

// Check if email service is running properly
if ( ! function_exists('mail')) {
    echo 'Mail function is not enabled on this server';
}

// Check server logs for error messages
$error_log = '/var/log/mail.log';
if (file_exists($error_log)) {
    $log_content = file_get_contents($error_log);
    if (strpos($log_content, 'error') !== false) {
        echo 'Error found in server logs';
    }
}

// Test sending emails from different email clients or scripts
$to = 'recipient@example.com';
$subject = 'Test Email';
$message = 'This is a test email';
$headers = 'From: user@example.com';

if (mail($to, $subject, $message, $headers)) {
    echo 'Email sent successfully';
} else {
    echo 'Failed to send email';
}

Keywords

SMTP email server PHP mail function error logs email delivery issues

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