I have a problem with a new installation of Exchange 2013 on a Windows 2012 Server. Most of the clients are Outlook 2010.
All the internal users are getting the error message:
"There is a problem with the proxy server's certificate. The name on the security certificate is invalid or does not match the name of the target site exchange2013.myinternaldomain.local
This is shortly followed by another box "the name on the security certificate is invalid or does not match the name of the site"
Of course the issue is my purchased SSL certificate is MAIL.REALDOMAIN.ORG while the server's name is exchange2013.myinternaldomain.local
With Exchange 2010 servers I have deployed I have had success following KB article 940726 but this time it didn't fix it with Exchange 2013.
There must be a solution!
I found this article:
http://support.microsoft.com/kb/2783881 the first suggestion from MS were impractical and the registry edit didn't work either (plus the thought of going to all my clients to do a registry fix doesn't make me happy!)
I tried creating a local DNS zone for my external domain name and pointing to the internal IP but that didn't fix it.
In the ECP under the Outlook Anywhere section -- "*Specify the internal host name such as contoso.com that users will use to connect to your organization:" I changed the internal host name to the external .org address but this caused Outlook clients internally not to work.
I used the -AutodiscoverServiceInternalUrl command to point it to the .org address on the certificate but didn't work either.
I have a service record in both external and internal DNS pointing to the mail.realdomain.org address.
Any other suggestions?
Thanks in advance!
Mike