Default settings for Exchange-related virtual directories in Exchange Server 2010

Whenever you mess up with authentication methods on the IIS or through powershell, services may not function properly, especially the published ones. Blew is the default authentication methods published at Exchange Team Blog site:

Exchange Server 2010 with the Client Access Server (standalone):

Location	Authentication	SSL Setting	Management
Default Web Site	Anonymous	Required	IIS Management Console
aspnet_client	Anonymous	Required	IIS Management Console
Autodiscover	Anonymous / Basic / Windows Authentication	Required	Exchange Management Shell
ECP	Anonymous / Basic	Required	Exchange Management Console or Shell
EWS	Anonymous / Windows Authentication	Required	Exchange Management Shell
Microsoft-Server-ActiveSync	Basic	Required	Exchange Management Console or Shell
OWA	Basic	Required	Exchange Management Console or Shell
Powershell	Anonymous	Not Required	Exchange Management Shell
RPC	Basic / Windows Authentication	Required	Exchange Management Shell
RpcWithCert	all options Disabled	Required (128 bit not checked)	N/A
OAB	Windows Authentication	Not Required	Exchange Management Console or Shell

Exchange Server 2010 Mailbox role (standalone):

Location	Authentication	SSL Setting	Management
Default Web Site	Anonymous	Required	IIS Management Console
PowerShell	Anonymous	Not Required	Exchange Management Shell