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phpmailerHow can I troubleshoot a failed connection with PHPMailer?


  1. Check for syntax errors in your code - use a linter such as PHP_CodeSniffer to check for any syntax errors.

  2. Check your authentication credentials - make sure the username and password you are using to authenticate with PHPMailer are correct.

  3. Check the SMTP server settings - ensure that the SMTP server settings are correct and that the SMTP server is reachable from your server.

  4. Check for any firewall or network issues - if the SMTP server is not reachable, check for any firewall or network issues that may be blocking the connection.

  5. Test the connection with telnet - use telnet to test the connection to the SMTP server. For example:

telnet smtp.example.com 25
  1. Check the log files - check the log files for any errors that may be related to the connection.

  2. Check the PHPMailer documentation - consult the PHPMailer documentation for additional troubleshooting tips and solutions.

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