I have migrated my exchange from SBS2003 to Server 2012 with Exchange 2010
My external clients (OWA) and mobiles work great with no issues BUT my outlook clients on my local LAN get a certificate error when they open up or go to set out of office.
it still looks like its trying to connect to SVR2012.mycompany.local but using the mail.mycompany.co.uk certificate
( strange thing is if I change the binding in IIS to use the SVR2012.mycompany.local certificate then outlook flips the error the other way round and uses the external address to connect and the internal SSL)
so far I have done the following
I have a godaddy SSL ceritifacte with mail.mycompany.co.uk installed on the server and in exchange.
I have bind the mail.mycompany.co.uk in IIS
I have set all the cas urls to mail.mycompany.co.uk for both internal and external
I have created a DNS zone on the 2012 server of mycompany.co.uk and created an A record for mail.mycompany.co.uk pointing to 192.168.1.251 (server address)
any suggestions would be great as I can not see why its still using the internal URL