nslookup: server can't find type=MX

C:\Users\guyver>nslookup -type=mx ya.ru
╤хЁтхЁ:  ASUS.*****
Address:  192.168.100.1

Не заслуживающий доверия ответ:
ya.ru   MX preference = 10, mail exchanger = mx.yandex.ru

ya.ru   nameserver = ns5.yandex.ru
ya.ru   nameserver = ns1.yandex.ru

$ nslookup -q=mx ostin.org
Server:		10.10.10.1
Address:	10.10.10.1#53

Non-authoritative answer:
ostin.org	mail exchanger = 10 ASPMX.L.GOOGLE.COM.
ostin.org	mail exchanger = 20 ALT1.ASPMX.L.GOOGLE.COM.
ostin.org	mail exchanger = 20 ALT2.ASPMX.L.GOOGLE.COM.
ostin.org	mail exchanger = 30 ASPMX2.GOOGLEMAIL.COM.
ostin.org	mail exchanger = 30 ASPMX3.GOOGLEMAIL.COM.
ostin.org	mail exchanger = 30 ASPMX4.GOOGLEMAIL.COM.
ostin.org	mail exchanger = 30 ASPMX5.GOOGLEMAIL.COM.

Authoritative answers can be found from:

[jugatsu@lenovo netkit]$ nmap 8.8.8.8 -PN --reason -p 25

Starting Nmap 5.00 ( http://nmap.org ) at 2010-11-06 19:42 MSK
Interesting ports on google-public-dns-a.google.com (8.8.8.8):
PORT   STATE    SERVICE REASON
25/tcp filtered smtp    no-response

Nmap done: 1 IP address (1 host up) scanned in 2.57 seconds