Shulou(Shulou.com)06/01 Report--

First of all, e-mail has become an important tool for business exchanges and internal communication within enterprise organs, and the data attached to the email and its attachments is very huge, and after entering the era of big data, the enterprise's information, especially the core data, will be the most important wealth and one of the core competitiveness of the enterprise, but in recent years, * incidents have emerged one after another. Because the production cost of spam and virus is almost zero and the technical threshold is low, criminals are eager to try. Spam is a worldwide problem. China has gradually become the second largest spam manufacturer in the world in recent years. According to statistics, more than 90% of the world's mail is spam, which is shocking.

Let's take a look at the dangers of spam:

There are many kinds of spam, such as websites, propaganda emails containing political, religious, ethnic and other sensitive content, mails of illegal organizations such as pyramid schemes, the most common commercial advertisements, fishing advertisements, and so on. Viruses have a variety of attractive names, such as worms, which will destroy the computer's information center, copy and spread unscrupulously, and paralyze a large area of computers in a very short time.

Spam is full of mailboxes, which not only occupies mailbox space, but also seriously affects network bandwidth and seizes server resources. a large number of spam will confuse the line of sight and make users miss normal emails. and some spam will always be displayed at the front of the mailbox queue to attract attention. according to statistics, domestic enterprise mailbox users spend an average of about half an hour a day dealing with spam, and time is money. This is a lot of loss.

Many spam emails have a very high degree of simulation, which is only slightly different from the "normal contacts" of email users. If users don't pay attention, they will hit the road. When viruses and spam attack the e-mail system, they either invade mailbox accounts and send spam to other accounts, or the SMTP port of the email system, resulting in unstable server operation or even downtime.

Some domestic mail system products have their own advantages, some focus on communication functions, some focus on office applications, many brands of mail systems only set up simple anti-spam rules and the basic protection of firewalls, so at this time it is necessary to introduce anti-spam gateways to build a protection network.

Finally, let's take a look at the specific performance of the U-Mail mail gateway:

1. Filtering spam and viruses: it comprehensively adopts professional means such as keyword filtering, Bayesian statistical analysis, URL filtering, email fingerprint filtering, and behavior analysis technology based on protocol layer, such as TCP/IP connection, SMTP and so on. Reasonable modeling, real-time update of spam and virus database, dynamic monitoring, accurate comparison, and finally traced back to the email itself format standard check, source check, authentication check, so that there is no hidden form of spam and virus.

two。 Blocking network *: U-Mail mail gateway is the strongest defense line on the periphery of the mail system used by users. It can effectively intercept and analyze various * * requests, reject abnormal email links, isolate suspicious content, and ensure the security of the internal mail system.

3. Improve the performance and efficiency of the mail server: by handing over the task of scanning the mail content to the anti-spam gateway, the resource shortage of the component server can be greatly alleviated, and the existing mail server components and hardware can support more users; at the same time, a lot of bandwidth and IT resources can be saved.

4. Receiving email during downtime: U-Mail email gateway can receive email when the server has network outage, power outage, outage and other failures, and then deliver it when it returns to normal.

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