Why Does My PHPMailer Get \'SMTP ERROR: Password Command Failed\' When Sending from a Shared Server?

SMTP ERROR: Password Command Failed When Sending Mail from Server Using PHPMailer

When attempting to send emails from a shared server using PHP's PHPMailer class, you may encounter the error "SMTP connect() failed." This can be frustrating, especially when you know your script is correct.

The cause of this error often lies in Google's security measures for Gmail accounts. To solve this issue, make sure that:

1. Allow Less Secure Apps:
   Disable the "Block less secure apps" feature in your Gmail settings: https://www.google.com/settings/u/1/security/lesssecureapps.
2. Confirm Suspicious Access:
   Login to your Gmail account and accept any suspicious access attempts from your shared server: https://security.google.com/settings/security/activity?hl=en&pli=1.
3. Clear CAPTCHA:
   If the issue persists, you may need to clear the CAPTCHA challenge associated with your account by visiting: https://accounts.google.com/b/0/DisplayUnlockCaptcha.

By following these steps, you can enable your shared server to send emails using Gmail's SMTP server without encountering password errors. This will allow your PHPMailer scripts to function properly and effectively.

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