Potential fix for code scanning alert no. 17: Information exposure through an exception

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: GitTimeraider

app/directadmin_api.py

@@ -280,8 +280,10 @@ def validate_domain_access(self):
             return False, "Unable to verify domain access"
 
         except Exception as e:
+            import traceback
             print(f"Error validating domain access: {e}")
-            return False, f"Error validating domain: {str(e)}"
+            traceback.print_exc()
+            return False, "An internal error occurred while validating domain access."
 
     def get_email_accounts(self):
         """Get all email accounts for the domain"""