On Mon, Feb 08, 2010 at 04:49:44PM +0000, Michele Carandente wrote:

> Well, I'm making a kind of GUI because it must be implemented in
> another product.
> 
> Anyway, coming back to my old question, I think I'm ok with SMTP 
> authentication.
> 
> Now I've just to setup how to change the encryption (SSL or TLS) and
> then I'm happy :p

It is not "SSL *or* TLS", it is "SSL/TLS", the two are the same, just
different revision levels of a single protocol:

        SSL 2   - Obsolete Netscape SSL protocol
        SSL 3   - Version 3.0 of the SSL protocol
        TLS 1.0 - Version 3.1 of the SSL protocol an IETF standard
        TLS 1.1 - Version 3.2 of the SSL protocol an IETF standard
        TLS 1.2 - Version 3.3 of the SSL protocol an IETF standard

You can safely disable SSLv2. Now there is also a separate question
of how SSL/TLS is used, STARTTLS versus wrapper-mode. See a recent
post by Noel Jones in the list archive.

-- 
        Viktor.

P.S. Morgan Stanley is looking for a New York City based, Senior Unix
system/email administrator to architect and sustain our perimeter email
environment.  If you are interested, please drop me a note.

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