mx record lookup command

Zheng Yi 20110330 Background: What is MXRecord? Used by the email system to locate the email server based on the recipient's address suffix when sending an email. For example, when the recipient is a user@mydomain.com, the system will parse

The following is from the author of the "network administrator must read-Net Formation" (2nd edition) of the book.   7.6.2 main resource record types and application examplesAfter you create a zone, you need to add additional resource records to

Macromedia Fireworks parameter selection settings allow you to control the general appearance of the user interface. In addition, Fireworks allows you to customize shortcut keys. This means that you can customize and standardize shortcut keys

I. PrefaceIi. Basic Knowledge1. What is an IP address?2. What is a fixed IP address?3. What is a dynamic IP address?4. What is a domain name? What makes a domain name?5. What are subdomain names and second-level domain names?6. What is DNS?7. What

Netstat Command Overview:Netstat is a very useful tool for monitoring TCP/IP networks, which can display routing tables, actual TCP network connections, TCP and UDP snooping, process memory management, and status information for each network

This is a creation in Article, where the information may have evolved or changed. NET package provides a portable interface for network I/O, including TCP/IP,UDP, domain name resolution, and UNIX sockets. Although the net package provides a lot of

Reprinted from (http://blog.csdn.net/u010430304/article/details/54601302)Basic application of JndiJndi is a shorthand for Java naming and directory Interface (Java naming and directory interface), which is the API for providing naming and directory

The problem is due to anti-spam software, which has been confirmed by Sina that they recently deployed a set of anti-spam systems. By default, the mail server sends its own FQDN name when it makes a helo command to establish a session with a Remote

Spam in the flood of today, spam to our lives, work, learning has brought great harm. Because of the lack of effective authentication mechanism between SMTP servers, even if the use of spam identification blocking technology is still common, and the

DNS is one of the core Internet protocols. Whether it's surfing the web or programming, you need to know a little bit about it.This article describes in detail The principle of DNS and how to use the tool software to observe its operation. My goal