Hello, We have two AD sites, one forest, one domain: xyz.local and SMTP domain xyz.com. At site 1: we have had Exchange 2007 SP2 all in one installed; at site 2, we will install Exchange 2010 SP1 (all in one). Users at site 1 use Outlook 2007 to access emails and use CAS-Ex2k7 to access their web mails, and users at site 2 will use Outlook 2010 to access their emails and use CAS-Ex2010 to access their web mails. How can I configure autodiscover for this scenario? What is the best practice to configure Exchange 2007 and 2010 to work with their own autodiscover? Thanks in advance!

Configuring the Autodiscover Service to Use Site Affinity for Internal Communication : http://technet.microsoft.com/en-us/library/bb332063(EXCHG.80).aspx#ConfiguringADSiteAffinity How to Configure the Autodiscover Service to Use Site Affinity : http://technet.microsoft.com/en-us/library/bb332063(EXCHG.80).aspx#ConfiguringADSiteAffinity Anil

thanks.