使用nslookup进行MX检测

nslookup

 nslookup > set type=mx >example.com Server:        10.4.0.1 Address:    10.4.0.1#53 Non-authoritative answer: example.com    mail exchanger = 50 aspmx3.googlemail.com. example.com    mail exchanger = 10 aspmx.l.google.com. example.com    mail exchanger = 20 alt1.aspmx.l.google.com. example.com    mail exchanger = 30 alt2.aspmx.l.google.com. example.com    mail exchanger = 40 aspmx2.googlemail.com. Authoritative answers can be found from: example.com    nameserver = ns48.domaincontrol.com. example.com    nameserver = ns47.domaincontrol.com. aspmx.l.google.com    internet address = 209.85.222.1 aspmx2.googlemail.com    internet address = 209.85.135.2 aspmx3.googlemail.com    internet address = 209.85.199.2 ns47.domaincontrol.com    internet address = 216.69.185.2