Hello from Germany,
we want to upgrade from Exchange 2010 to Exchange 2016. In advance I wanted to configure Split-DNS, so that the internal and external URL is identical.
I have configured the zones as in various instructions, obtained a SAN certificate and deposited this for all services of the Exchange. In addition, I adjusted the addresses of the vDirs via Powershell and performed an iisreset.
Get-OwaVirtualDirectory -Server exch | Set-OwaVirtualDirectory -InternalUrl 'https://mail.firma.de/owa'
Get-EcpVirtualDirectory -Server exch | Set-EcpVirtualDirectory -InternalUrl 'https://mail.firma.de/ecp'
Get-OABVirtualDirectory -Server exch | Set-OABVirtualDirectory -InternalURL 'https://mail.firma.de/OAB'
Get-ActiveSyncVirtualDirectory -Server exch | Set-ActiveSyncVirtualDirectory -InternalURL 'https://mail.firma.de/Microsoft-Server-ActiveSync'
Get-WEbServicesVirtualDirectory -Server exch | Set-WEbServicesVirtualDirectory -InternalURL 'https://mail.firma.de/EWS/Exchange.asmx'
Get-ClientAccessServer -Identity exch | Set-ClientAccessServer -AutodiscoverServiceInternalUri 'https://autodiscover.firma.de/autodiscover/autodiscover.xml'
Get-OutlookAnywhere -Server exch | Set-OutlookAnywhere -ExternalHostname mail.firma.de
Get-WEbServicesVirtualDirectory -Server exch | Set-WEbServicesVirtualDirectory -InternalURL 'https://mail.firma.de/EWS/Exchange.asmx' -InternalNLBBypassUrl 'https://mail.firma.de/EWS/Exchange.asmx'
Enable-ExchangeCertificate -Thumbprint Abcd1234 -Service IIS, IMAP, SMTP, POP
The clients resolve the URL accordingly, Outlook starts and emails go in/out. However, the out of office assistant does not work and the free/busy display of the shared calendars.
Autodiscover seems to be iO though, at least according to Outlook test. I have broken up traffic between Outlook and Exchange via Fiddler and only see 401/403 error messages when accessing the EWS directory, no success messages and suspect that is where the problem is.
The virt. Directory for EWS/Webservics I have reset and recreated. No improvement. A new Outlook profile did not help either.
Have any of you had this problem before and possibly a tip?