Do not log password changes.

roles/ispmail-webmail/templates/roundcube-password-config.inc.php.j2

@@ -19,7 +19,7 @@ $config['password_minimum_length'] = 10;
 $config['password_require_nonalpha'] = false;
 
 // Enables logging of password changes into logs/password
-$config['password_log'] = true;
+$config['password_log'] = false;
 
 // Comma-separated list of login exceptions for which password change
 // will be not available (no Password tab in Settings)