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I have an on-premise Exchange 2010 that I'm trying to configure for Hybrid migration.

When I run the Hybrid Configuration Wizard from the EMC, it seems to complete okay but I get a warning at the end:

Warning: The Client Access Server APOLLO does not have a Certificate that contains the On-premises Web Services External Url domain (email.mydomain.com) in the certificate Subject or Alternate Names

What I can't work out is where it's getting that domain name from. The Exchange server is set up a UC certificate that has a bunch of SANs on it:

  • mail.mydomain.com
  • www.mail.mydomain.com
  • apollo.mydomain.com
  • autodiscover.mydomain.com
  • dialin.mydomain.com
  • lync.mydomain.com
  • meet.mydomain.com
  • webmail.mydomain.com
  • www.mail.mydomain.com

Where is the wizard looking for that domain name, so I can change it?

1 Answer 1

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I'm guessing its the externalURL of your EWS virtual directory. Try running the following command in the Exchange Management Shell:

Get-WebServicesVirtualDirectory | Select Name,*url
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  • Aha, got it - had to run the "Configure External Client Access Domain" command from the EMC under Server Config/Client Access.
    – Cylindric
    Sep 17, 2013 at 10:46

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