Outlook 2013 not recognizing new internal SSL certificate for Exchange 2013

I had to create a new self signed SSL certificate for Exchange 2013 CU9.  The old one expired.  I put the new certificate in IIS Manager | Server Certificates on the Exchange server.  I removed the expired certificate.  Outlook 2013 continues to tell the user the certificate has expired.  Outlook is referring to the expired certificate.  Where does it see the certificate?  How do I get it to see the new certificate?
Steven HelmsIT SupportAsked:
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Will SzymkowskiSenior Solution ArchitectCommented:
You need to enable the Exchange certificate on ALL of the Exchange servers that have the CAS role installed. You need to do this from powershell. The syntax is below...

View the current Exchange certificates listed on the CAS server
Get-ExchangeCertificate | fl

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Enable the Certificate
Enable-ExchangeCertificate -Thumbprint xxxxxxxxxxxxx -services "pop,imap,smtp,iis" -confirm:$false

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