I've found that /usr/local/cpanel/whostmgr/bin/dnsadmin (script responsible for dns zone manipulating) have by default included execution of /var/cpanel/prednsadmin if it exists. I don't want to mess with dnsadmin script since it will be possibly overwritten via upcp if it should be updated with new features from cpanel. Anyway, what I want to do is put some custom code in prednsadmin script and depending of the outcome of those checks I would like it to stop or pass the dnsadmin script upon let's say creating new dns zones. To be more specific. In certain cases i don't want to allow creation/updates of dns zones via cpanel or whm. I want this script to stop it with some error codes. Question is, is this even possible trough prednsadmin script or should I turn my eyes to modifying a dnsadmin script? Tnx.