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Autodiscovery on exchange 2013 error 10

I build a new exchange 2013 server and I install a godaddy certificate.
I run the following on exchange:

Set-ClientAccessServer -Identity exchange -AutodiscoverServiceInternalUri

Set-WebServicesVirtualDirectory -Identity "exchange\EWS (Default Web Site)" -InternalUrl

Set-OABVirtualDirectory -Identity "exchange\oab (Default Web Site)" -InternalUrl

Set-OutlookProvider -Identity EXPR -CertPrincipalName

I'm still getting the error message bellow.
If I go to Outlook proxy settings it has exchange.XXX.local and not the mail.XXX.local

Strange is that few PC get the proper settings but most does not.
Any idea why?
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Gareth Gudger
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Looks like you are setting up split-brain DNS. Did you configure these A records on your local DNS servers?
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Yes I did.
I don't think the problem is on the server.
Everything there point to the external url.
Only 2 out of 10 computers has this problem were the exchange proxy resolve to the internal design even if I set it manually to the external one.
One thing I did on those two was that I click on install certificate when I first get the error before I even install the godady certificate on the server.
I try clear ssl on Ie but didn't work.
Hmm. Try this.

Set-OutlookAnywhere -ExternalHostName -ExternalClientAuthenticationMethod Basic -ExternalClientsRequireSSL $true -InternalHostName -InternalClientAuthenticationMethod NTLM -InternalClientsRequireSSL $true

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The problem was not related to the new exchange server