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The steps above show you how to connect in the most secure manner, however, you could loosen the settings using the ?set-popsettings ?logintype? or the ?set-imapsettings ?logintype? commands. The commands are followed by the following options;

PlainTextLogin
PlainTextAuthentication
SecureLogin
Using PlainTextLogin option opens things up, completely allowing connection to the standard (non TLS) ports (110 for POP3 and 143 for IMAP4). It also allows passwords in plain text over the network.

The PlainTextAuthentication options still allows for connection to the standard (non TLS) ports, but requires the use of secured passwords as used with the Secure Password Authentication option in the client.

Finally, the SecureLogin option is the default as detailed in the walkthrough above. After changing any of these settings, restart the relevant service for it to take effect. Personally, I would leave the settings at their defaults as anything less is simply not secured.

Note: If you are trying the above with Outlook Express 6 or earlier, then you will have a problem setting the SMTP server to use SSL/TLS over port 587. The problem is that Outlook Express can only negotiate explicit TLS over port 25. Outlined below are both explicit and implicit TLS:

Explicit TLS: In order to establish the SSL link, explicit security requires that the client issues a specific command (STARTTLS) to the server after establishing a connection.

Implicit TLS: Implicit security automatically begins with an SSL connection as soon as the client connects to a server. With implicit security, the server defines a specific port for the client (for POP3 and IMAP4, 995 or 993) to be used for secure connections.

If you want to keep using SSL/TSL with Outlook Express 6, one solution to this problem is to make use of the default SMTP connector which is set up to use SSL/TLS over port 25. However, perhaps a better option would be to separate the traffic off to a new connector listening on a different IP address but still on port 25.

Birde asagidaki makaledeki adimlari kontrol edebilirmisiniz:

http://www.msexchange.org/articles_t...007-part2.html

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