Follow the steps mentioned below to test current MX records in windows machine C:\> nslookup 


Default Server: pdc.corp.example.com 


Address: 192.168.6.13 


> server 172.31.01.01 


Default Server: dns1.example.com 




Address: 172.31.01.01


> set q=mx


> example.com.


Server: dns1.example.com


Address: 10.107.1.7


example.com MX preference = 10, mail exchanger = mail1.example.com