DNS Electronic Mail Support and Mail Exchange (MX) Resource Records
Most savvy users of the Internet know that DNS exists, and they usually associate it with the most common Internet applications. Of these applications, the "Big Kahuna" is the World Wide Web. It's probably the case that the majority of DNS name resolution requests are spawned as a result of web server domain names being typed into browsers billions of times a day, as well as requests for named pages generated by both user mouse clicks and web-based applications.
Of course, DNS is not tied specifically to any one application. We can specify names in any place where an IP address would go. For example, you can use a DNS name instead of an address for an FTP client, or even for a ...
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