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域名

域名設置

注意！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！！

域名設置這一步驟非常重要，如果設置不當，就會出現郵件發不出，收不到等等問題……

以中國萬網的域名管理為例,下面是中國萬網的域名管理面板

Figure 1. Domain Name

A 記錄
添加mail A記錄，並解析到你伺服器的IP
MX 郵件交換記錄
添加mx 記錄，並解析到你mail主機
保存設置
保存設置後，一般會在48小時後生效
注意事項
有一些域名提供商的mx 記錄要在主機後加".",中國萬網的不用，他們會自動給你加上。如果你的域名是在外國註冊的。如美國，域名更新要4-7個工作日。

如果不想等48個小時，你可以修改你的系統DNS，設為你的域名提供商的DNS。這裡以中國萬網為例：

C:\>nslookup
Default Server:  apngw.sz002.nfht
Address:  192.168.0.253

> set type=ns
> net.cn
Server:  apngw.sz002.nfht
Address:  192.168.0.253

Non-authoritative answer:
net.cn  nameserver = sld-ns2.cnnic.net.cn
net.cn  nameserver = sld-ns3.cnnic.net.cn
net.cn  nameserver = sld-ns4.cnnic.net.cn
net.cn  nameserver = sld-ns5.cnnic.net.cn
net.cn  nameserver = cns.cernet.net
net.cn  nameserver = sld-ns1.cnnic.net.cn

sld-ns2.cnnic.net.cn    internet address = 202.97.16.197
sld-ns3.cnnic.net.cn    internet address = 210.52.214.85
sld-ns4.cnnic.net.cn    internet address = 61.145.114.119
sld-ns5.cnnic.net.cn    internet address = 61.139.76.54
cns.cernet.net  internet address = 202.112.0.24
sld-ns1.cnnic.net.cn    internet address = 159.226.1.3
> set querytype=ns
> www.net.cn
Server:  apngw.sz002.nfht
Address:  192.168.0.253

Non-authoritative answer:
www.net.cn      nameserver = dns2.hichina.com
www.net.cn      nameserver = dns1.hichina.com

dns2.hichina.com        internet address = 202.106.169.100
dns1.hichina.com        internet address = 218.30.103.50
> dns1.hichina.com
Server:  apngw.sz002.nfht
Address:  192.168.0.253

hichina.com
        primary name server = dns1.hichina.com
        responsible mail addr = hostmaster.hichina.com
        serial  = 2004040801
        refresh = 21601 (6 hours 1 sec)
        retry   = 3600 (1 hour)
        expire  = 1728000 (20 days)
        default TTL = 43200 (12 hours)
> dns2.hichina.com
Server:  apngw.sz002.nfht
Address:  192.168.0.253

hichina.com
        primary name server = dns1.hichina.com
        responsible mail addr = hostmaster.hichina.com
        serial  = 2004040801
        refresh = 21601 (6 hours 1 sec)
        retry   = 3600 (1 hour)
        expire  = 1728000 (20 days)
        default TTL = 43200 (12 hours)
> set type=a
> dns1.hichina.com
Server:  apngw.sz002.nfht
Address:  192.168.0.253

Non-authoritative answer:
Name:    dns1.hichina.com
Address:  218.30.103.50

> dns2.hichina.com
Server:  apngw.sz002.nfht
Address:  192.168.0.253

Non-authoritative answer:
Name:    dns2.hichina.com
Address:  202.106.169.100

>
> exit

C:\>

首先，單擊開始菜單->運行->輸入cmd。進入CLI(命令行界面)然後運行nslookup程序，nslookup會顯示">"命令提示符

set type=ns
設計查詢類型，ns是查詢dns伺服器
net.cn
顯示net.cn域名的上級dns,可以看得出net.cn上級是cnnic(中國互聯網絡信息中心)

set querytype=ns

與set type=ns相同

www.net.cn

顯示www.net.cn的dns伺服器

dns2.hichina.com

dns1.hichina.com

這就是我們要的dns伺服器,你可以使用ping命令得到dns的IP,也可以使用正向解析得到它的IP。

C:\>ping dns2.hichina.com

Pinging dns2.hichina.com [202.106.169.100] with 32 bytes of data:

Reply from 202.106.169.100: bytes=32 time=243ms TTL=241
Reply from 202.106.169.100: bytes=32 time=233ms TTL=241
Reply from 202.106.169.100: bytes=32 time=312ms TTL=241
Reply from 202.106.169.100: bytes=32 time=236ms TTL=241

Ping statistics for 202.106.169.100:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 233ms, Maximum = 312ms, Average = 256ms

C:\>

set type=a
dns1.hichina.com
通過正向解析得到dns1.hichina.com的IP

設置Internet 協議（TCP/IP）

Figure 2. Internet 協議（TCP/IP）屬性

Linux

[root@linux root]# vi /etc/resolv.conf
nameserver 218.30.103.50
nameserver 202.106.169.100

測試你的域名

C:\>nslookup
Default Server:  apngw.sz002.nfht
Address:  192.168.0.253

> 9812.net
Server:  apngw.sz002.nfht
Address:  192.168.0.253

Name:    9812.net
Address:  202.103.190.130
> set type=ns
> 9812.net
Server:  apngw.sz002.nfht
Address:  192.168.0.253

Non-authoritative answer:
9812.net        nameserver = dns1.hichina.com
9812.net        nameserver = dns2.hichina.com

dns1.hichina.com        internet address = 218.30.103.50
dns2.hichina.com        internet address = 202.106.169.100
> set type=mx
> 9812.net
Server:  apngw.sz002.nfht
Address:  192.168.0.253

9812.net        MX preference = 10, mail exchanger = mail.9812.net
9812.net        nameserver = dns2.hichina.com
9812.net        nameserver = dns1.hichina.com
mail.9812.net   internet address = 202.103.190.130
dns2.hichina.com        internet address = 202.106.169.100
dns1.hichina.com        internet address = 218.30.103.50
>

Linux CLI

[root@linux 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.
> 9812.net
Server:         202.96.128.68
Address:        202.96.128.68#53

Non-authoritative answer:
Name:   9812.net
Address: 202.103.190.130
> set type=mx
> 9812.net
Server:         218.30.103.50
Address:        218.30.103.50#53

9812.net        mail exchanger = 10 mail.9812.net.
> set type=ns
> 9812.net
Server:         202.96.128.68
Address:        202.96.128.68#53

Non-authoritative answer:
9812.net        nameserver = dns1.hichina.com.
9812.net        nameserver = dns2.hichina.com.

Authoritative answers can be found from:
>

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