Hello,

i have purchased a UCC certificate from a third party ventor (including only the external names of my domain) and i have install it in my Exchange Server 2007 SP2.

i have chose for this UCC certificate to allocate ONLY the IIS service. For the rest services (SMTP, IMAP, POP) i have created a self signed certificate for the Outlook clients to use.

My OWA clients find and use the UCC certificate as they should and it works fine.

My problem is now that whenever i open up my Outlook 2010 client, it gives a Security Alert for the certificate. It finds and try to use the UCC certificate and not the self signed.

Can someone help on this one?

• Moved by Jason Johnston [MSFT]Microsoft employee Wednesday, August 26, 2015 11:58 AM Not a development question.

Solved my issue by redirecting the internal names for Autodiscovery for my Exchange to external names, following the below link

https://www.digicert.com/ssl-support/redirect-internal-exchange-san-names.htm

• Marked as answer by Giannakoulias 21 hours 20 minutes ago