As I know, IIS and DNS is the two places to check
You can also check the configuration in the output of the “Get-AutodiscoverVirtualDirectory” cmdlet
Please also check the answer in
this thread
Please run an outlook profile repair so that AutoDiscover configuration will be required again
Resource:
Default settings for Exchange-related virtual directories
in Exchange Server 2007
James Luo
TechNet Subscriber Support
in forum
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