Hello,
I had made allready a feature request about it, but is it actually anyway possible to disable the DNS Management for single Domains?
Disable for single Domains
The DNS Management access is determined by the entry in the mod_solutedns_zones table. You could simply temporary disable the DNS Management for an specific domain by setting the client_id to an non existing value like zero (0). In order to restore access you reset the old client_id and the client should have access again.