I am deploying Exchange 2010 this year. Is there a way to have Outlook Anywhere clients connect to a secondary Exchange Proxy (a CAS array published by ISA) at a backup site in the even that the primary site is down?

Are you talking multiple ISA gateways? or weblisteners?

Hi,The CAS array itself is a good proxy for this issue.http://www.msexchange.org/articles_tutorials/exchange-server-2007/planning-architecture/uncovering-new-rpc-client-access-service-exchange-2010-part1.htmlThanksAllen

Hi-You've got a couple options:--> Tweak the DNS record and point it to the secondary site--> Update the Outlook Anywhere URLs which Autodiscover feeds from and clients will update when they re-autodiscoverActive Directory, 4th Edition - www.briandesmond.com/ad4/