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Publish Multiple OWA & ECP Virtual Directories on one Exchange 2010 CAS Server

Suppose you host more than one domain at your Exchange server , and each company need to have its OWA URL , below is steps how you can implement more than one OWA & ECP on one Exchange 2010 server

1- Create a new WEB SITE
– New IP
– Ports 80 / 443
– Name WebMAIL
– Default Path – C:\inetpub\wwwroot

2- Install Certificate (HTTPS) for External User

3- Copy the Folders:
C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa
C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\ecp
C:\Program Files\Microsoft\Exchange Server\V14_domainname\ClientAccess\Owa
C:\Program Files\Microsoft\Exchange Server\V14_domainname\ClientAccess\ecp

4- ON IIS – ISAPI and CGI Restrictions
Give Permission ALLOW to this DLL
C:\Program Files\Microsoft\Exchange Server\V14_domainname\ClientAccess\Owa\auth\owaauth.dll

5- On Exchange Power Shell
new-owairtualDirectory -WebSiteName “WebMAIL” -Path “C:\Program Files\Microsoft\Exchange Server\V14_domainname\ClientAccess\Owa”

New-ecpVirtualDirectory -WebSiteName “WebMAIL” -Path “C:\Program Files\Microsoft\Exchange Server\V14_domainname\ClientAccess\ecp”

6- Fix Virtual Directory Path
In IIS – change – The Virtual Directory Path

7- In Exchange Console
– Server Configuration > Client Access > <server> > Outlook Web APP > owa (Mail) > Properties Authentication > Use one or more standard authentication methods > FBA

– Server Configuration > Client Access > <server> > Exchange Control Panel > ECP (Mail) > Properties Authentication > Use one or more standard authentication methods > FBA

8- Reset IIS

Now try to browse the URL of the new OWA

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