Ip Blacklist

Real-time mail blacklist service, as an effective service against the spread of spam, has been widely used abroad. Many nongovernmental or official anti-spam organizations have launched their real-time blacklist for users to choose from. Real-time blacklist is based on the analysis of artificial or machine to determine whether an IP address is a spam source, so that it blacklisted. The user's mail server can query the blacklist to decide whether to accept messages from that address. In determining whether it is a spam source, most of the spam is sent by this address ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall in several years SEO service process, I have experienced various types to need the SEO service the site, for example: the Product Promotion Enterprise website, contains a large number of industry keywords vertical class information website, the page complexity degree highest web2.0 website, Specific keyword optimization of the shopping mall, etc., in SEO optimization before and after the optimization has also encountered complex site rankings change problem; but fortunately, by virtue of the search algorithm and SEO operational aspects of the detailed research, those problems have been the right knot ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall long ago know, the choice of IP address, may decide a website in Baidu search weight, 　　So experienced seoer generally will choose not to be punished IP address, preferably an IP address corresponding to a website, is conducive to Baidu's weight promotion. I set up a live entertainment class six months ago ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall since you used the overseas space, suddenly there is a problem, 　　The service provider periodically notifies you to modify the domain name to point to IP. 　　This may be the reason: 1, the service provider to replace the server, 2, "sealed" IP in the country can not be normal access. Service Provider Replacement Server This is not very common, in general, ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall If your space service provider frequently and irregularly informs you to modify the domain name resolution of the point IP, Or simply force you to resolve your domain name using the CNAME method, then you should be aware of it. This situation generally occurs in the use of overseas servers, the reason may be two: 1, IP was sealed-server IP in the domestic ...

Intermediary transaction SEO diagnosis Taobao guest Cloud host technology Hall because of the popular search engine, web crawler has become a very popular network technology, in addition to doing search Google,yahoo, Microsoft, Baidu, almost every large portal site has its own search engine, big and small call out the name of dozens of species, 　　There are a variety of unknown thousands of tens of thousands of, for a content-driven Web site, by the patronage of web crawler is inevitable. Some intelligent search engine crawler Crawl frequency is more reasonable, to the website resource consumption ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall in many large enterprises and some countries, Some access restrictions are usually made to restrict access to certain Web sites or use certain Web applications by employees or people. 　　Restrictive methods usually have router IP filtering and enforcing the use of proxy servers, among other ways. Router IP filtering refers to the addition of a network to the router ...

1. Defensive Foundation 1.1. Attack Traffic in the End How DDoS Talk about defense, the first is to know in the end suffered much attack. This question seems simple, in fact, there are many unknown details in it. Take SYN Flood as an example. To increase the sending efficiency, more SYN wait queues are generated on the server. When the attacker populates the header, the IP header and the TCP header are not filled with optional fields, so IP ...

China Internet Association 2006 the first China Anti-Spam survey showed that from November 2005 to March 2006, the proportion of spam received by Chinese Internet users rose from 61.53% to 63.97%, up 2.44%, well above the last survey of 0.9%. Chinese netizens have received an average of 19.33 spam messages a week, up 2.08 from 17.25 a week in October 2005. Junk mail is getting worse! In the face of these disgusting spam, we lose more than just ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall in recent days Baidu and Google Spit War dozen very fierce, Baidu to search injustice attributed to the rubbish information, Google, however, retorted that relying on machines and technical means to counter garbage has become the rule of law, Baidu's argument is only an excuse. No matter who is right or wrong, an indisputable fact is that junk information has been ...