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Ubuntu 9.10 Course: Secure The Ubuntu Mail Server

Oct 30, 2009, 22:41 (0 Talkback[s])

[ Thanks to Andrew Weber for this link. ]

"Now there is one problem you need to recognize. The mail that you send and retrieve from your mail server is plain text but is protected because of the security you have set up. However, when you send mail, once it leaves your mail server it is not protected and travels to the next mail server in plain text in which it could be captured and read. If you want to protect the contents of your mail you must use encryption to protect your mail from source to destination. Meaning, you encrypt it and someone on the other end must unencrypt with keys that you need to provide them. The real advantage of protecting your connections when you are sending and retrieving is that your passwords are protected to and from your mail server."

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