I have a domain mydomain.com I also have an external POP3 mail server mail.mydomain.com. when I try to resolve mail.mydomain.com internally it resolves to and old external IP address. (we just switched mail carriers) Externally mail.mydomain.com resolves correctly to the new external IP. I looked in DNS and there is not any records pointing to the old IP. I looked at the HOSTS file on the server and there is no entry's.
Any place I can look to find out where this pointer to the old IP address is? Also I was going to just put in a new A Record to point mail.mydomain.com to the new IP address but I would receive this error message.
host record mail.mydomain.com can not be created node is a cname dns record.