Currently, I have I have an Exchange 2010 Service with 2 client access/ transport servers and 2 mailbox servers. I use a barracuda load balance appliance to manage the CASarray. Our SSL certificate for the service is currently SHA-1. I would like to replace the SSL certificate so that it using SHA-2 encyption keys. What compatibility issues do I need to be concerned about? Most of our users are running Windows 7 with Outlook 2010 and/or Outlook 2007 to the Exchange 2010 service. We also have a few Apple users running OS X and Office 2011 for the MAC. We have a lot of ipad ii and above and iphone 4 and above users using ios to connect to the service as well. People use a variety of web browsers: firefox, chrome, internet explorer, safarii. Most of my users are still using IE 9.x due to better compatibility with some of our SAP software.
Will my users have problems using a comodo sha-2 ssl certificate in my environment? Specifically, will there be issues with IE9.x on Windows 7? Any issues with Apple devices?