On the crime and punishment of the universal Domain name analysis

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The so-called "Universal Domain name resolution" means: using the wildcard * (asterisk) to do the secondary domain name to achieve all the subordinate domain names point to the same IP address.

For example, your domain name is seoyj.cn:

Do a *.seoyj.cn of subordinate domain A records point to 222.222.222.222, then when the visitor is entered either "123.seoyj.cn" or "123.123.seoyj.cn" or even "!@#.$%$.6543". Any character such as ww.a.seoyj.cn can point to the IP address of 222.222.222.222.

For some portal sites for users and visitors a good URL to display, most of the previous enabled the pan-resolution, and now slowly canceled this feature, because the search engine is not good for it. Stone recently in for a customer to do SEO time, enabled the pan-analytic, just one months a Baidu index of about 1000 words on the Baidu home page, the next few days there are problems, many friends said the site home sank, Baidu on the site: www.ganai.sx.cn time has been a very strange phenomenon, in the first place is a Web site with two www, the beginning of the time also scold Baidu is crazy, so not intelligent, and then found that is the cause of the pan-resolution, do friendship connection time a more high weight of the site more than WWW, the results directly led to a Baidu this station's main domain name is with two www Station.

There are two ways of dealing with this situation:

1, disable the universal resolution, using a record resolution, in a few days will be normal.

2, quickly modify the connection error, to find a higher weight of the site to connect the correct URL.