Hi In my Exchange Environment I have been import Windows CA to Exchange, IIS, SMTP, POP3, and IMAP. after that my OWA can access with Encrypted for all of clients that has login as Users domain, but for the Client access OWA over Internet they got the Untrusted Certifcate for access to OWA. then I export the Windows CA and import to Trusted Root Certification Authorities it is working with Encrypted. So I want to public Certificate with Windows Certificate Authentication, how can i do it and do you have any idea for this?

Just buy a certificate. $70/year. http://CertificatesforExchange.com/ No messing around with importing certificates everywhere. It will be cheaper than buying a root so that you can issue your own certificates! Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

hi If i buy the Certificate from the third party what kind certificate that i need to register as SSL Certificate, domain Certifcate or hosting Certificate? please give me some idea becuase it news for me. thanks and best regard.

Hi, The simple process is as below: 1. Purchase an SSL certificate from a well-known certification authority(CA) 2. Generate and submit the certificate request 3. Enable the certificate on the default Web site 4. Require the Client Access server virtual directories to use SSL For the detail steps, you can refer to the similar thread ‘Guide me to buy certificate for exchange 2010' which also applies Exchange 2007: http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/c57fc091-9b02-458c-94af-692e9633df8d Hope this helps. Thanks Sophia Xu

hi If i buy the Certificate from the third party what kind certificate that i need to register as SSL Certificate, domain Certifcate or hosting Certificate? please give me some idea becuase it news for me. thanks and best regard. You just need to purchase a Subject Alternative Name, aka multiple name certificate. http://exchange.sembee.info/2007/install/multiplenamessl.asp Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.