How to find mail errir in php mailer

The joys of debugging PHP mailer issues!

To find the error in PHP mailer, you can try the following steps:

1. Check the PHP error log: PHP has a built-in error log that can help you identify any issues with your mailer script. You can check the error log by looking for the error_log file in your PHP installation directory (usually php_errors.log or error_log.txt).
2. Enable PHP mailer debugging: You can enable debugging in PHP mailer by setting the debug option to true in your PHP mailer configuration. This will output detailed error messages to the screen or log file.

   $mail = new PHPMailer();
   $mail->Debug = true;

3. Check the mailer's error output: PHP mailer provides an ErrorInfo property that contains the error message. You can access this property to get the error message:

   $mail->ErrorInfo;

4. Check the mail server logs: If you're using a mail server (e.g., Sendmail, Postfix, or Exchange), check the server logs for any errors related to your mailer script.
5. Use a mailer library with built-in error handling: Some PHP mailer libraries, such as SwiftMailer, provide built-in error handling and debugging features.
6. Check the mailer's SMTP connection: If you're using SMTP to send emails, check the connection to the SMTP server by using a tool like Telnet or a mail client like Thunderbird.
7. Check the email address and server settings: Verify that the email address and server settings are correct in your PHP mailer configuration.
8. Use a mailer library with a built-in test mode: Some PHP mailer libraries, such as PHPMailer, provide a built-in test mode that allows you to simulate the mail sending process and check for errors.

Common PHP mailer errors and their solutions:

• "Could not connect to SMTP host": Check the SMTP server settings and ensure that the server is reachable.
• "SMTP Error: 421": Check the SMTP server settings and ensure that the server is configured to allow connections from your IP address.
• "Message not sent": Check the email address and server settings, and ensure that the message is properly formatted.
• "Authentication failed": Check the authentication settings and ensure that the username and password are correct.

By following these steps, you should be able to identify and fix the error in your PHP mailer script.