I have two cas server configured in NLB. They are our internet facing CAS servers. All the reuquests to autodiscover.mydomain.com and webmail.mydomain.com are being forwareded to the CAS1 server. we will be configuring outlook anywhere, active sync. To configure the internal autodiscover site used the following commandSet-ClientAccessServer -Identity cas1 -AutoDiscoverServiceInternalUri Hence i included the following autodiscover.mydomain.comwebmail.mydomain.comcas1.mydomain.comcas2.mydomain.comcas1 i have imported the certificates on cas1 using the exchange command shell and imported the certificate using the export and import method on the cas2 server When i forward the autodiscover.mydomain.com and webmail.mydomain.com request from firewall to cas2 server, the certificate error is throwed. If i foward the autodiscover.mydomain.com and webmail.mydomain.com request from firewall to NLB IP, the certificate error is throwed. If i foward the autodiscover.mydomain.com and webmail.mydomain.com request back to cas1 ehe certificate error disappears. how to solve the problem?swamy

Hi,What happens when you open the sites directly on the server ?Regards,Johanblog: www.johanveldhuis.nl

I agree with Johan, please open the url in the CAS server to see if there is any error.