[root@ws01 root]# nslookup
Note: nslookup is deprecated and may be removed from future releases.
Consider using the `dig' or `host' programs instead. Run nslookup with
the `-sil[ent]' option to prevent this message from appearing.
> set type=mx
> qq.com
Server: 211.90.72.65
Address: 211.90.72.65#53
Non-authoritative answer:
qq.com mail exchanger = 10 mx0.qq.com.
Authoritative answers can be found from:
qq.com nameserver = dns1.imok.net.
qq.com nameserver = dns2.imok.net.
dns1.imok.net internet address = 219.133.40.202
dns2.imok.net internet address = 61.152.100.5
> [root@ws01 root]# telnet 211.90.72.65 25
Trying 211.90.72.65...
Connected to dns.nmhh.cnuninet.net (211.90.72.65).
Escape character is '^]'.
220 nmdns1 ESMTP Sendmail 8.13.4+Sun/8.13.3; Tue, 3 Jul 2007 21:00:40 +0800 (CST)
helo ws01.nm165.com
250 nmdns1 Hello [61.240.185.41], pleased to meet you
mail from:<
ymail@nm165.com>
250 2.1.0 <
ymail@nm165.com>... Sender ok
rcpt to:<
95885983@qq.com>
