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When You Send an Email, Do You Care Who Receives It?

When you send an email to Aunt Sally do you care who receives it? Do you care if it goes to your Uncle Juan instead? Wait a minute - do you have an Uncle Juan? Then whose Uncle Juan received it? Do you care if it reaches Aunt Sally if you send it from work but my Uncle Juan if you send it from home?

Of course you care who receives it . . . that's why you wrote it in the first place. Whether you're doing business or sending personal correspondence, you want to be certain that your message gets to the intended addressee.

If at any point the DNS must make a choice between two identical domain names with different IP addresses, the DNS would not function. It would not know how to resolve the domain name. When a DNS computer queries another computer and asks, "are you the intended recipient of this message?", "yes" and "no" are acceptable answers, but "maybe" is not.