How can one troubleshoot PHP mail function issues on a self-hosted server?

To troubleshoot PHP mail function issues on a self-hosted server, you can start by checking if the mail function is enabled in your PHP configuration file (php.ini). Additionally, ensure that the necessary mail server settings are correctly configured in your script. You can also check for any errors in the mail logs on your server to identify the root cause of the issue.

// Example PHP code snippet to send an email using the PHP mail function
$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";
$headers = "From: sender@example.com";

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