Tag Archives: Co-Existence

EMS Command to Set Legacy Outlook Web Access in Exchange 2010

If you will be running Exchange 2003 & 2010 simultaneously with mailboxes in both environments, you’ll need to run the Set-OWAVirtualDirectory command on each CAS Server in your organization.  The command to run is:


Set-OWAVirtualDirectory -Identity "CASServer\owa (Default Web Site)" -Exchange2003URL https://legacy.webmail.domain.com/exchange

Simply change the relevant parts to reflect the settings in your environment.  This will tell Exchange 2010 OWA to redirect for clients with Exchange 2003 mailboxes to the appropriate OWA server.