Microsoft has released a new client-side hotfix (KB 939184) for Outlook 2007 which will allow Outlook 2007 to contact the Exchange 2007 Autodiscover using DNS SRV records (KB 940881). This allows you to save costs by using a single-name certificate with a single IP. A con to this is your Outlook 2007 clients will have to accept a re-direct message. This hotfix will be included in Outlook 2007 SP1.
More information:
https://support.microsoft.com/kb/940881 (How to configure)
https://support.microsoft.com/kb/939184/ (Information about hotfix)
https://support.microsoft.com/gp/CUHotFix_LandingPage_Request (Request hotfix)
https://msexchangeteam.com/archive/2007/09/21/447067.aspx (Msexchangeteam.com article)
I actually Feel blog post, “New Method to Deploy Autodiscover (Using DNS SRV) | Elan Shudnow’s Blog” was in fact really good! I reallycould not agree with u more! Finally seems like I reallyidentified a blog site worthy of browsing. Thanks for your time, Mario
any special ISA settings if we go with the srv record instead of the autodiscover A record?
Never tried it but there shouldn't be anything special you need to do in ISA. You'll still want to make sure you include the /autodiscover/* path in the ISA Rule in the Paths Tab.