How can the issue of a contact form not sending emails on a specific server be resolved in PHP?

The issue of a contact form not sending emails on a specific server in PHP can be resolved by checking the server's email configuration settings. Ensure that the server is properly configured to send emails, including setting up SMTP settings if necessary. Additionally, check for any errors in the PHP code that might be preventing the email from being sent.

// Example PHP code to send email using SMTP settings
$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";

// Set SMTP settings
ini_set("SMTP", "mail.example.com");
ini_set("smtp_port", "25");

// Send email
if (mail($to, $subject, $message)) {
    echo "Email sent successfully.";
} else {
    echo "Email sending failed.";
}