mod_client_management: Prevent exception on missing client info > attempt to index a nil value (local 'legacy_info') Unsure how exactly this happens, perhaps by mixing SASL2/BIND2 with legacy equivalents?

This module blocks configured queries that change server state.

E.g. to make vCard storage read-only:

``` lua
readonly_stores = {
	vcard = { "vcard-temp", "vCard" };
}
```