一、概念
windows域环境中，类似于机器名有DNS名字和netbios名字
域名也有netbios 域名。建立AD的时候会设置netbios域名，如图：
典型的环境（名字都匹配）：the primary DNS suffix, the DNS domain name, and the NetBIOS domain name match.
disjointed namespace 脱节命名空间
http://technet.microsoft.com/en-us/library/bb676377(v=exchg.80).aspx
http://support.microsoft.com/?ln=zh-cn&kbid=2269838
企业合并或者管理方面会导致此情况
A disjointed namespace scenario is one in which the primary DNS suffix of a computer does not match the DNS domain name where that computer resides
The computer with the primary DNS suffix that does not match is said to be disjointed. Another disjointed namespace scenario occurs if the NetBIOS domain name of a domain controller does not match the DNS domain name.
二、三种场景
三、客户端提交搜索的动作。
1.主DNS后缀
2.网络连接上知道的DNS后缀
比如提交example,会加上主DNS后缀microsoft.com,形成example.microsoft.com
如果查询失败会加上网络连接DNS后缀xx.com.去查询example.xx.com
3.可以在组策略中设定search list.例如microsoft.com,serverua.microsoft.com,office.microsoft.com，用逗号隔开。
可以加入脱节命名空间的域名例如search list为microsoft.com ,xx.com,
4.可以组策略设定后缀移交。
例如主DNS后缀为tt.xx.oo.com客户端查询example,
先查询example.tt.xx.oo.com,如果失败则查询example.xx.oo.com,又失败继续查询example.oo.com,
