Problem
Your WHMCS installation is not sending email or the sent email doesn’t display properly. When you check the log at Configuration () > System Logs, you see the following error:
Smarty Error: Not allowed by security policy
Cause
The email template contains advanced code that the default email security policy blocks.
Solution
To resolve this issue:
- Review the code in the email to confirm what it’s trying to send at Configuration () > System Settings > Email Templates.
- Add an exception to the email security policy to allow the desired code.
Last modified: October 25, 2024