A.   On Windows 2000/XP/NT, Linux, Unix, use command nslookup

• Make sure your domain whois data is pointing to our DNS servers by using command
  nslookup -type=NS yourdomainname.com If the response does not contain all of the dnsExit name servers, then you should contact your registrar and have them change it.
• Before the domain DNS servers pointed to our name servers, you can force nslookup to user our name server by:nslookup www.yourdomainname.com ns1.dnsexit.com
• To look for a certain record type, like the MX record or the SOA record, you can use the parameter -type=MX or -type=SOAnslookup -type=MX yourdomainname.com