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What is the difference between TLS and SSL? Which should I be using?

April 26, 2017difference SSL TLS

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What is the difference between TLS and SSL? Which should I be using?

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A. There isn’t really any difference to the end user. TLS version 1 is, in effect, a branch of SSL version 3. We currently recommend setting SSL for your IMAP (incoming) connection and TLS for your SMTP (outgoing) connection for both on and off campus connections. Note that you don’t get the choice with Outlook Express – you’re forced to use SSL for both.