Exchange/Outlook encryption

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I'm looking at rolling out Exchange/Outlook encryption across the company (70 users), and wondered if anybody had any good links to articles/whitepapers etc, or can recommend a good book etc detailing the processes?

Also, wondered what are the benefits/drawbacks of using my own CA as opposed to an external third party CA?

TIA.

NB

 

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I only have experience in Exchange 2003 and Outlook 2003, 2007. I would recommend the MS Press Book 70-284 which covers the installation process pretty well.

In relation to the using your own Enterprise CA rather than a External CA. Pretty much I believe the only difference will be for OWA (Outlook Web Access) as when people try to connect from an external PC, they will get a message something along the lines of 'this party cannot be trusted'.

I'm sure others especially Triton will be able to add a few additional comments.

 

A thread i created last month: http://www.certforums.co.uk/forums/thread32554.html

 

Thanks for the replies guys.

Initially, I'm looking at encryption on the Outlook client and not OWA.

Cheers
NB

 

If its internal only then you can use your own CA.

 

The company wants to be able to encrypt emails between us and external clients, so would I need to use a third party CA then?

NB