How  to us nslookup:

:\> nslookup

Default Server: pdc.corp.example.com

Address: 192.168.6.13

> server 10.255.255.255

Default Server: dns1.example.com

Address: 10.255.255.255

> set q=mx

> contoso.com.

Server: dns1.example.com

Address: 192.168.10.10

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

contoso.com MX preference = 10, mail exchanger = mail2.contoso.com

contoso.com MX preference = 10, mail exchanger = mail3.contoso.com

mail1.contoso.com internet address = 192.168.255.011

mail2.contoso.com internet address = 192.168.255.012

mail3.contoso.com internet address = 192.168.255.013

Force Domain Controller replication:

repadmin /syncall /AdeP
Windows Command Line Utilites