What is the real maximum length of a DNS name?

Raymond ChenApril 12, 2012Apr 12, 201204/12/12

The maximum length of a DNS name is 255 octets. This is spelled out in RFC 1035 section 2.3.4. A customer didn't understand why the DnsValidateName was rejecting the following string: (63 letters).(63 letters).(63 letters).(62 letters) The documentation says Returns ERROR_INVALID_NAME if the DNS name The length of the domain name ...