C:\Users\sterkh>nslookup -type=mx centrbt.ru ns4.p01.dynect.net
╤хЁтхЁ:  ns4.p01.dynect.net
Address:  204.13.251.1

Не заслуживающий доверия ответ:
centrbt.ru      MX preference = 10, mail exchanger = ASPMX3.GOOGLEMAIL.COM
centrbt.ru      MX preference = 10, mail exchanger = ASPMX4.GOOGLEMAIL.COM
centrbt.ru      MX preference = 10, mail exchanger = ASPMX5.GOOGLEMAIL.COM
centrbt.ru      MX preference = 1, mail exchanger = ASPMX.L.GOOGLE.COM
centrbt.ru      MX preference = 5, mail exchanger = ALT1.ASPMX.L.GOOGLE.COM
centrbt.ru      MX preference = 5, mail exchanger = ALT2.ASPMX.L.GOOGLE.COM
centrbt.ru      MX preference = 10, mail exchanger = ASPMX2.GOOGLEMAIL.COM

centrbt.ru      nameserver = ns1.p01.dynect.net
centrbt.ru      nameserver = ns4.p01.dynect.net
centrbt.ru      nameserver = ns2.p01.dynect.net
centrbt.ru      nameserver = ns3.p01.dynect.net
ASPMX.L.GOOGLE.COM      internet address = 74.125.143.27
ALT1.ASPMX.L.GOOGLE.COM internet address = 173.194.64.27
ALT2.ASPMX.L.GOOGLE.COM internet address = 74.125.142.26
ASPMX2.GOOGLEMAIL.COM   internet address = 173.194.64.27
ASPMX3.GOOGLEMAIL.COM   internet address = 74.125.133.27
ASPMX4.GOOGLEMAIL.COM   internet address = 74.125.134.27
ASPMX5.GOOGLEMAIL.COM   internet address = 173.194.68.26
ns1.p01.dynect.net      internet address = 208.78.70.1
ns2.p01.dynect.net      internet address = 204.13.250.1
ns3.p01.dynect.net      internet address = 208.78.71.1
ns4.p01.dynect.net      internet address = 204.13.251.1

C:\Users\sterkh>