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by sojoey

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What is a good reason that users are asked to enter a Fully
Qualified
Host Name in Outlook for their POP3 and SMTP
server rather than an IP address?

3 replies

by true_texan

The only really good reason that I can think of is that IP addresses sometimes change, but the Host Name will follow which ever server is appropriate. Some of the new technologies which load balance server activity may also use the Host Name methodto route users to whichever server can best process their request. Users who use an IP address will alway hit the same server.

Hope this helps!

by shanghai sam

I think the only reason is between connectionless and the connection based. FQDN is a connection based which both pop/smtp require to have for the reliable communication where the IP is the connectionless that does not guarantee the delivery

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