What steps should be taken to troubleshoot mail delivery issues in PHP when using sendmail?

When troubleshooting mail delivery issues in PHP when using sendmail, check the sendmail_path configuration in your php.ini file to ensure it is pointing to the correct sendmail binary. Additionally, verify that the sendmail binary is installed on your server and is functioning properly. You can test the mail delivery by sending a test email using the mail() function in PHP. 

// Check sendmail_path configuration in php.ini
$sendmailPath = ini_get('sendmail_path');
echo "Sendmail Path: " . $sendmailPath;

// Test mail delivery
$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 "Mail sent successfully!";
} else {
    echo "Failed to send mail.";
}

Keywords

sendmail PHP troubleshooting mail delivery error detection

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