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DigitalNova09Flag for United Kingdom of Great Britain and Northern Ireland

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2003 to 2010 - Auto-discovery Outlook 2010 Client


I have a exchange 2003 system (5 servers) and I am about to introduce the 1st 2010 server in the AD.

Once I have created my Internet facing 2010 box, I understand autodiscovery comes into play.

My question is - What can I expect (user wise) once the 1st 2010 box is in place and I am waiting for my 3rd party SSL cert. I won't be adding any new clients, so its just existing Outlook 2010 clients connecting to exchange 2003?

This is so I can provide advance notice to the users as to what to expect and how to work around it.
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Simon Butler (Sembee)
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Thanks for the information.

Where do I find set-clientaccessserver and the AutodiscoverServiceInternalURI setting?

IF I dont do this presumably they have to keep clicking on the accept, how often are they likly to have to do that, once per login?
Its an Exchange management shell configuration.
I have given you the command and the value to adjust.

If you don't change it you will just have a large number of pissed off users. It takes all of thirty seconds to change to correct the problem.

OK thanks.

Will I have to do this as I add further 2010 boxes with the CAS role? Ultimatly I will have 5 one in each branch and one at HQ which will be the Internet facing one.
Autodiscover is site aware. Therefore you will need a unique URL for each site and if the URL is not the default (the server's real FQDN) then it will have to be changed.
As the URL needs to be in the SSL certificate and soon you will not be able to get local names in the SSL certificates the best practises moving forward is to setup split DNS and have a unique external name for each site and make the changes in Exchange, internal and External DNS so that it resolves correctly.

Thanks Simon,

Finally, I presume I will have to obtain 5 seperate certs for my setup:
1 UC SSL Cert for the Internet Facing CA
4 Standard SSL certs for each of my branch servers?
A single certificate with all of the relavant names on it will be fine and probably cheaper as well. As long as the URLs that you are using for the additional offices are one of the additional names, that will be fine.
Do the request on one server, once you have completed the request, export and import on the others. Therefore just ensure that whoever you use for the SSL certificate allows unlimited servers.

Thanks Again,

I was going to use the DigiCert for the UC certificate, are they OK with multi-servers or do you recommend someone else?
I haven't used them myself. I usually use a GoDaddy reseller: 

Thanks for your help