Hi

I have setup a test environment with a virtual machine of server 2012 and on a separate virtual machine exchange 2013. OWA works internally and externally and I have a 30day trial of a SAN certificate installed on the exchange server but I am unable to connect outlook 2010 or 2013 to exchange it just keeps saying that THE CONNECTION TO THE MICROSOFT EXCHANGE SERVER IS UNAVAILABLE. I have tried on 3 different computer systems running different os versions and different outlook versions and all have the same problem. I have also tries typing the exchange server by name and ip and I have tried using auto discover to setup outlook but all attempts so far did not work

Hi,

In your test environment, check the client computer's default gateway and it's DNS. When trying to setup Outlook profile, use GC server's name or IP address to see if this works.

Hope it is helpful.

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Hi,

thanks for your help.

After much frustration i have reloaded server2012 with exchange2013 on a physical environment and discovered that when running windows 8 and office 2013 outlook did not want to connect to the exchange server if the pc was not part of the domain, once i joined the domain it worked fine with previous versions i have been able to at an exchange account in  outlook account to pc's that weren't part of the domain. Now i just get the certificate warning popups when using outlook, do i need just one certificate in exchange and delete the standard ones that come with them or leave them there?

Have same issue, but solve it on this way:

Open Exchange PowerShell and type:

Get-OutlookProvider -Identity EXCH | FL
If is field CertPrincipalName empty type following:
Set-OutlookProvider EXCH -CertPrincipalName msstd:FQDN YOUR MAIL SERVER
After this everuthing works for me and all Outlook 2010 clients (OS: Windows XP SP3) can connect to 
Exchange Server 2013. 
Rgds

Omar Kudovic