I have a single SBS2008 server with Exchange 2007 SP3. I have been asked to setup encrypted email with a client’s server using TLS. There is a Godaddy UCC certificate on the server which has been working ok for the last 3 years with no problems. I have created a send connector ok and ticked to use 'Domain Security' (Mutual Auth TLS) & put their Domain in the address field. Is this all that's needed to send encrypted email from our server to the clients server? I am not an Administrator but have been put in charge of getting this done.