Microsoft Windows [versão 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. Todos os direitos reservados.

C:\Users\fernando.macedo>nslookup
Servidor PadrÒo:  server-food.esys3.com.br
Address:  192.168.0.1

> set type=mx
> exittech.com.br
Servidor:  server-food.esys3.com.br
Address:  192.168.0.1

Não é resposta de autorização:
exittech.com.br MX preference = 1, mail exchanger = aspmx.l.google.com
exittech.com.br MX preference = 5, mail exchanger = alt1.aspmx.l.google.com
exittech.com.br MX preference = 5, mail exchanger = alt2.aspmx.l.google.com
exittech.com.br MX preference = 10, mail exchanger = aspmx2.googlemail.com
exittech.com.br MX preference = 10, mail exchanger = aspmx3.googlemail.com

exittech.com.br nameserver = dns1.upworks.com.br
exittech.com.br nameserver = dns2.upworks.com.br
aspmx.l.google.com      internet address = 74.125.47.27
alt1.aspmx.l.google.com internet address = 173.194.73.27
alt2.aspmx.l.google.com internet address = 173.194.66.27
aspmx2.googlemail.com   internet address = 74.125.43.27
aspmx3.googlemail.com   internet address = 74.125.127.27
>