elstar.com.au

How to Install GoDaddy UCC Certificate in Exchange 2007
http://help.godaddy.com/topic/742/article/4877
Firstly Exchange Server 2007 requires the use of a Unified Communications Certificate (UCC)
Here is an web based Easy csr generator
https://www.digicert.com/easy-csr/exchange2007.htm

Now goto Exchange 2007 PowerShell
Make sure you right click and select run as an administrator when starting the Exchange PowerShell


See my steps to generate and install certificate
http://rotary.elstar.com.au/elstar_bb/viewtopic.php?f=22&t=278&p=316&hilit=certificate#p316

Issues found
I generated a certificate with the names
mail.xxx.com.au
autodiscover.xxx.com.au
sites
autodiscover

However I had not set up the domain name autodiscover.xxx.com.au
and so the godaddy site did not issue the certificate as the name was not found in the dns.
I created the autodiscover.xxx.com.au dns entry and hopefully the ssl certificate will be issued.