The problem concerns the creation of zones for middle-class C. 192/26.xx.xx.xx.in-addr.arpa trying to add class and I get an error Domain contains invalid characters.. There is no problem for it as I want to add RevDNS for the whole class C. My current version is 3.0.2.1 ISPConfig
The / character is not allowed in the regex that tests the input. Please report this to the bugtracker so we can fix this in the next release.