Hi All, Looking for some advice. We have a Exchange 2003 server with around 150 users ( IPads, IPhones, Laptops local and remote) The server is currently configured using the MS Self Signed (Free) Certificate via the CA software. The server is setup for Outlook over RPC, so when we setup laptops we have to manually import the certificate then setup the Outlook Profile. We now would like to move away from a in-house Exchange 2003 server to MS Exchange Plan 1 Hosted Exchange. To carry out a Staged Migration one of the requirements is Outlook RPC over HTTP must be configured using a Certified trusted Certificate (Go-daddy) Now i was to purchase a certificate then reconfigure the server to use it would this mean that i would need to reconfigure all clients manually ? if so then this would not be an option as it would cause too much down time. Thanks Roger

Hi Roger, No this does not mean you have to reconfigure all clients manually. The Url they will user for all the HTTP access methods won't change, or? So the benefit of trusted certificates is, that you do not have to import them on your clients. Every client has list of trusted root CAs and certificates issued by these CAs are automatically trusted by your client. From my experience you can't do anything wrong with the Go-Daddy certificates. Best Regards Timo

Hi Timo, Thanks for the quick reply and confirmation that my clients wont need changing, saves a lot of work. Hi Roger, No this does not mean you have to reconfigure all clients manually. The Url they will user for all the HTTP access methods won't change, or? So the benefit of trusted certificates is, that you do not have to import them on your clients. Every client has list of trusted root CAs and certificates issued by these CAs are automatically trusted by your client. From my experience you can't do anything wrong with the Go-Daddy certificates. Best Regards Timo Roger