Is PKI a Requirement to Run Exchange 2010?

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B

bfatwow

Can we implement an Exchange 2010 environment without implementing PKI? Or will 2010 just not work without it?
 
T

TWHarrington

PKI is not required. During the install Exchange 2010 created self-signed certificates to handle any needed encryption out of the box. I would recommend switching the CAS cert with a public certificate to alleviate client pop-ups for OWA, EAS, etc.
 
A

AndyD_ [MVP]



That depends. If you are using Outlook 2010 or Communicator or any other client ( other than Outlook 2007) that works against the CAS, using internal PKI or 3rd party certificates that all clients trust is a must. Do yourself a favor and do not use the Exchange self-signed certs.

http://blogs.msexchange.org/walther/2010/05/18/certificate-warning-when-using-self-signed-exchange-certficate-and-outlook-2010/

I have seen this myself and have a number of people report the same. Outlook 2010 will throw an error if using the Exchange 2010 self-signed certificate that is installed during installation.
 
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