Why do you need an anti spam gateway?

Spam and virus messages can be filtered. If there is too much spam, it will affect the normal office and occupy mailbox space. If there is a virus email, it may lead to mailbox theft, computer poisoning, etc.

You can try out the U-mail anti-spam gateway.

Cloud Union Anti-Spam Gateway is a spam defense service that can be seamlessly integrated with any email system software (such as: Exchange Domino MDAEMON Winmail Coremail, etc.) to solve the defense problems of spam, phishing and other threat emails, and solve the problems of overseas mail bounces, non-receipt and delay in receiving, without installing any software and hardware. Use the log management platform to view quarantined spam and virus messages.

Because there are many dangerous emails: such as virus emails, spam emails, threat emails, etc., all of them need to be anti-spam gateway.

Many marketing companies will send a large number of advertising emails, and some criminals and hackers will also send some spam emails, which will affect the normal office, and the viruses carried in the emails may also invade the company's computers and systems, bringing losses to the company. --Softnext is an internal security anti-spam gateway.

The following points should be required to choose an anti-spam gateway:

1. Efficient and stable.

2. Zero communication risk.

3. It has a low false positive rate.

4. High filtration rate.

5. Maintenance-free design.

6. Fast and lasting service support.

Anti-spam is a long-term and protracted battle, which requires long-term service and support from manufacturers, especially localized services and support.

As for which brand to recommend Barracuda, more than 20,000 companies around the world use Barracuda every day; Every day, Barracuda filters out more than 5 billion virus, spam, or any other type of email that is potentially threatening to corporate networks and users. Please see the references for details!

Rich Gateway can handle the intercepted spam in a variety of ways, and customers can choose according to their own needs, and the processing methods are as follows:

Quarantiation: Stores spam and suspected spam in a temporary area for users to manually handle by logging in to the quarantine.

Drop: Support the system to automatically discard and deal with spam in and out of the mail system.

Deletion: The system supports temporary collection of spam and suspected spam in the quarantine area, which can be manually deleted or automatically deleted after the temporary retention period.

Tagging of spam emails: The system supports marking the source IP address of spam for statistical analysis of the source IP reputation.

The Anti-Spam Gateway, the 1994 Green Card Incident, is the origin of spam. A couple of lawyers in the United States spread a false advertisement with the same content on the Internet in large numbers, saying that they can help new immigrants apply for green cards, with a 100% success rate. The green card incident has caused great indignation among netizens, who are not mainly directed at fake advertisements, but at the lawyer couple's indiscriminate spamming.

Since then, spam has appeared on the stage of the history of the Internet.

In August 2000, China Telecom formulated measures for dealing with spam and defined spam as e-mail advertisements, publications or other materials sent to unsolicited users; Emails that do not have a clear return method, sender, reply address, etc.; Bumper TalkGod uses China Telecom's network to engage in conduct that violates the security policies or terms of service of other ISPs; Other messages that are expected to result in a complaint.

On May 20, 2002, China Education and Scientific Research Computer Service Network published the "Regulations on the Administration of Stopping Spam", which defines spam as any e-mail that is forcibly sent to the user's mailbox without the user's request, such as any advertisement, promotional material, virus, etc., generally has the characteristics of being sent in batches. An anti-spam gateway is a hardware device that is set up in front of the enterprise email system server.

The device receives all the emails that enter the enterprise, processes the emails, and allows the good emails to enter the enterprise mail server. Anti-spam gateways are usually built on top of Linux or BSD-based hardened operating systems, but some vendors have made solutions based on other operating systems. The form of hardware and the hardened operating system make the spam firewall more susceptible to hackers and other attacks.

A good spam firewall not only blocks spam but also protects the mail server from other forms of attacks.

Many people don't know that in fact, anti-spam gateways also have software forms, that is, embedded, such as Coremail Anti-Spam GT is a kind of software gateway. The advantage of the software-based anti-spam gateway is that it is cheap, easy to deploy, and is bound and installed together with the mail system, which can reduce the trouble of additional configuration, and can also get rid of the impact of the anti-spam gateway on the high-speed network, and the anti-spam effect is no less than that of hardware equipment.

1.Set the anti-spam level of the email system to the highest to make it more difficult for spam to be sent. Normal emails go directly through our email gateway, and our email anti-spam gateway IP is already in the customer's trusted IP, and can be sent directly without filtering.

Operation: Turn off port 25 and go directly to port 465, the encrypted port corresponding to port 25.

If you are using a client such as Outlook or Foxmail, check the client's port first, which is generally ports 25 and 143. If it is port 25, you need to change it to port 465, and if it is port 143, you need not change it.