i have a problem with cname record if example add a record test cname www.google.com if execute dns checkr the real resolution is www.google.com.mydomain.com ehy ?? can help me ?
You missed adding a dot at the end of the domain name. Any fully qualified domain name in DNS must end with a dot. See ISPConfig DNS tutorial on how to create a DNS record https://www.howtoforge.com/tutorial/setting-up-your-own-name-service-with-ispconfig/ , or documentation of the BIND DNS server.