We currently have an Exchange 2010 setup that is configured with SSL certs on 123.com, this is used by OWA and mobile phones (Blackberry's, Iphones, Androids)
We have re branded so now our primary domain is ABC.com however all of the SSL certs and access is still configured for 123.com which are due to expire.
I have to change this and have purchased a new wildcard SSL cert for abc.com, my concern is that when i replace the SSL cert what will the impact be on mobile devices, we have about 300 so re-configuring those is going to take some time.
For a period of a month we are going to forward webmail.123.com to webmail.abc.com which will be fine for people using OWA but i'm not sure that will help with mobiles, most use activesync configured to connect to webmail.123.com
Has anyone been through this before and have advice