Introduction to email gateways, what are the functions of email gateways

A mail gateway is a computer that transmits e-mail from one network to another, from one network to the Internet, or vice versa, reformatting header messages if necessary. Gateways used to be an easy-to-understand concept. In the early days of the Internet, the term gateway referred to routers.

The router is a marker in the network that goes beyond the local network, and this "gate" to the unknown was, and still is, used to compute routes and bring packet data to parts of the source network, so it is considered the gateway to the Internet. Over time, routers ceased to be magical, and the emergence and maturation of public IP-based WANs contributed to the growth of routers. Routing functions can also be performed by hosts and switching hubs, and gateways are no longer a mysterious concept.

The router becomes a multi-functional network device, which can divide the LAN into several network segments, interconnect the relevant LANs in the private WAN, and interconnect the various WANs to form the Internet, so that the router loses the original gateway concept. However, the term gateway is still in use, and it is constantly being applied to many different functions, and it is no longer easy to define a gateway.

Hello, email gateways are often used to send mail from one mail server to another, such as from an internal corporate mail server to an external mail server, or from an external mail server to an internal mail server

Email gateways are usually software-based cloud gateways, but also hardware-based, so it is recommended to consider the following points when choosing a reliable anti-spam gateway

1.Stability of the anti-spam gateway

As the entrance and exit of the email system, the anti-spam gateway directly affects the efficiency of the mail server. High availability and high load performance are one of the criteria for verifying the stability of an email gateway.

2.Anti-spam effect

The main function of the anti-spam gateway is phishing, fraud and other spam, while ensuring the normal business email sending and receiving, it can effectively identify and intercept spam.

3.High interception rate and low false positive rate

A high interception rate and a low false positive rate are a very important indicator to verify the performance of anti-spam gateways. If the normal business email of the enterprise is also intercepted by the anti-spam gateway, then the normal operation of the enterprise employees will be affected.

4.Compatible with a comprehensive email system

Common email systems on the market include Exchange, Domino, MDAEMON, Postfix, and Office365, and these email systems are perfectly compatible and easy to deploy.

5.IT operations management flexibility

The management and deployment of the reliable anti-spam gateway system should be flexible and convenient to minimize the workload of enterprise operation and maintenance personnel. The back-end logging system, query management system, and useful reporting functions should be at a glance to help IT administrators keep track of email sending and receiving details.

As the entrance and exit of the email system, the email gateway directly affects the efficiency of the mail server, so it is a good choice to choose a reliable anti-spam gateway. Hopefully, the above will help you choose an email gateway.

Email gateways and protocol converters work the same way. A gateway is essentially an IP address from a network to other networks.

The gateway implements network interconnection above the network layer and is the most complex network interconnection device, which is only used for the interconnection of two networks with different higher-level protocols.

Gateways can be used for both WAN and LAN interconnections.

A gateway is a computer system or device that acts as a translator.

Used between two systems with different communication protocols, data formats or languages, or even completely different architectures, the gateway is a translator.

With bridges only.

Simply conveying information is different, and the gateway has to repackage the received information to fit the needs of the destination system. Same layer - application layer.

A better one can achieve anti-spam and anti-virus, international mail sending and receiving, email archiving, email monitoring, but not all of them can, such as turbogate email gateway can be realized, and others will be less.

If you tell him so much, it is estimated that he can't understand it, and the ** of the email is generally not used, but if you are a business, you may use it.

Turbogate is very good, you can ask for it.

The mail server provides mail services, while the gateway itself does not provide mail services, it generally provides functions such as email filtering and email security.

Email gatewaysTypically used to send mail from one mail server to another, located between the corporate intranet and the Internet, it is usually divided into:Hardware gatewayswithCloud gatewaysUsed to protect the enterprise email system from spam, virus emails, phishing emails and other threats, reliable email cloud gateway has been focusing on email security for more than 20 years and has the following functions:

1.Message filtering: Filters harmful emails such as spam, virus emails, and phishing emails to ensure that only secure emails can enter the corporate network.

2.Permission controlIT O&M controls and restricts senders, recipients, email subjects, and email sizes to protect the security of confidential enterprise information.

3.Email acceleration: The email gateway uses intelligent DNS technology to divert domestic and foreign traffic, and international mail directly goes to the overseas special line to speed up the inbound email.

4.Scalability: Supports custom policies, which is convenient for enterprises to customize email security policies according to the actual situation.

5.Log queries6.The email system is highly compatible

Common email systems on the market include Exchange, Domino, and PostFix, and reliable email gateways are perfectly compatible and easy to deploy.

In short, the email gateway can perform various tasks in the process of email delivery, such as preventing spam, performing content filtering and verifying the legitimacy of emails. Hope the above can help you, thank you.