From Exchange 2007, so it populates to all Outlook clients, how can I change the "Use this URL to connect to my proxy server for Exchange"? This is found under the Account Settings in Outlook, Connection, Exchange Proxy Setttings...
We were using our webmail certificate and I am not sure how this changed back to the local machine certificate. Get-ExchangeCertificate shows that the webmail certificate is enabled for SMTP.
I also issued the following which I thought changed it:
Set-ClientAccessServer -Identity MachineName -AutodiscoverServiceIntern
Right now, a lot of the clients are receiving: There is a problem with the proxy server's security certificate. The name on the security certificate is invalid or does not match the name of the target site (MACHINENAME). Outlook is unable to connect to the proxy server. (Error Code 10)