ClientAuthenticationMethod

Required

Microsoft.Exchange.Data.Directory.SystemConfiguration.AuthenticationMethod

The ClientAuthenticationMethod parameter specifies the authentication method that the Autodiscover service provides to the Outlook Anywhere clients to authenticate to the Client Access server. The authentication method can be set to one of the following:

• Basic (Basic authentication)
  
  
• Digest (Digest authentication)
  
  
• Ntlm (NTLM authentication)
  
  
• Fba (forms-based authentication)
  
  
• WindowsIntegrated (Integrated Windows authentication)
  
  
• LiveIdFba (Windows Live ID forms-based authentication)
  
  
• LiveIdBasic (Windows Live ID Basic authentication)
  
  
• WSSecurity (Windows SharePoint Security)
  
  
• Certificate
  
  
• NegoEx   Negotiate Ex authentication is an authentication type reserved for future Microsoft use and shouldn't be used. Use of this setting will cause authentication to fail.
  
  
• MaxValidValue
  
  
• Misconfigured
  
  

Note:
This parameter must be specified if you don't use the DefaultAuthenticationMethod parameter. When you use this parameter without specifying the IISAuthenticationMethods parameter, IISAuthenticationMethods parameter is set to both NTLM and Basic.

Note:
Although this parameter only allows setting one authentication method, the Shell doesn't return an error if you include multiple values.

DefaultAuthenticationMethod

Required

Microsoft.Exchange.Data.Directory.SystemConfiguration.AuthenticationMethod

The DefaultAuthenticationMethod parameter specifies whether to set both the ClientAuthenticationMethod and IISAuthenticationMethods parameters to the same authentication value.

When you set an authentication value by using the DefaultAuthenticationMethod parameter, you force the specified authentication method to be used on the /rpc virtual directory in Internet Information Services (IIS). The authentication method can be set to one of the following:

• Basic (Basic authentication)
  
  
• Ntlm (NTLM authentication)
  
  
• Digest (Digest authentication)
  
  
• Fba (forms-based authentication)
  
  
• WindowsIntegrated (Integrated Windows authentication)
  
  
• LiveIdFba (Windows Live ID forms-based authentication)
  
  
• LiveIdBasic (Windows Live ID Basic authentication)
  
  
• WSSecurity (Windows SharePoint Security)
  
  
• Certificate
  
  
• NegoEx   Negotiate Ex authentication is an authentication type reserved for future Microsoft use and shouldn't be used. Use of this setting will cause authentication to fail.
  
  
• MaxValidValue
  
  
• Misconfigured
  
  

Note:
If the DefaultAuthenticationMethod parameter is specified, neither the ClientAuthenticationMethod nor the IISAuthenticationMethods parameter can be used.

ExternalHostname

Required

Microsoft.Exchange.Data.Hostname

The ExternalHostname parameter specifies the external host name to use in the Outlook profiles for users enabled for Outlook Anywhere.

SSLOffloading

Required

System.Boolean

The SSLOffloading parameter specifies whether the Client Access server requires Secure Sockets Layer (SSL). This value should be set only to $true when an SSL hardware solution is running in front of the Client Access server.

Confirm

Optional

System.Management.Automation.SwitchParameter

The Confirm switch causes the command to pause processing and requires you to acknowledge what the command will do before processing continues. You don't have to specify a value with the Confirm switch.

DomainController

Optional

Microsoft.Exchange.Data.Fqdn

The DomainController parameter specifies the fully qualified domain name (FQDN) of the domain controller that writes this configuration change to Active Directory.

ExtendedProtectionFlags

Optional

Microsoft.Exchange.Data.MultiValuedProperty

The ExtendedProtectionFlags parameter is used to customize the options you use if you're using Extended Protection for Authentication. The possible values are:

• None   Default setting.
  
  
• Proxy   Specifies that a proxy is terminating the SSL channel. A Service Principal Name (SPN) must be registered in the ExtendedProtectionSPNList parameter if proxy mode is configured.
  
  
• ProxyCoHosting   Specifies that both HTTP and HTTPS traffic may be accessing the Client Access server and that a proxy is located between at least some of the clients and the Client Access server.
  
  
• AllowDotlessSPN   Specifies whether you want to support valid SPNs that aren't in the fully qualified domain name (FQDN) format, for example ContosoMail. You specify valid SPNs with the ExtendedProtectionSPNList parameter. This option makes extended protection less secure because dotless certificates aren't unique, so it isn't possible to ensure that the client-to-proxy connection was established over a secure channel.
  
  
• NoServiceNameCheck   Specifies that the SPN list won't be checked to validate a channel binding token. This option makes Extended Protection for Authentication less secure. We generally don't recommend this setting.
  
  

ExtendedProtectionSPNList

Optional

Microsoft.Exchange.Data.MultiValuedProperty

The ExtendedProtectionSPNList parameter specifies a list of valid Service Principal Names (SPNs) if you're using Extended Protection for Authentication on the specified virtual directory.

The possible values are:

• Null   This is the default value.
  
  
• Single SPN or comma delimited list of valid SPNs   By default, you must specify the fully qualified domain name (FQDN) (for example mail.contoso.com) for each SPN. If you want to add an SPN that's not an FQDN (for example, ContosoMail), you must also use the ExtendedProtectionTokenChecking parameter with the AllowDotlessSPN value. You specify the domain in SPN format. The SPN format is <protocol>/<FQDN>. For example, a valid entry could be HTTP/mail.contoso.com.
  
  

ExtendedProtectionTokenChecking

Optional

Microsoft.Exchange.Data.Directory.SystemConfiguration.ExtendedProtectionTokenCheckingMode

The ExtendedProtectionTokenChecking parameter defines how you want to use Extended Protection for Authentication on the specified Exchange virtual directory. Extended Protection for Authentication isn't enabled by default. The available settings are:

• None   Extended Protection for Authentication won't be used. Connections between the client and Exchange won't use Extended Protection for Authentication on this virtual directory. This is the default setting.
  
  
• Allow   Extended Protection for Authentication will be used for connections between the client and Exchange on this virtual directory if both the client and server support Extended Protection for Authentication. Connections that don't support Extended Protection for Authentication on the client and server will work, but may not be as secure as a connection using Extended Protection for Authentication.
  
  

Note:
If you have a proxy server between the client and the Client Access server that's configured to terminate the client-to-proxy SSL channel, you must also configure one or more Service Principal Names (SPNs) by using the ExtendedProtectionSPNList parameter.

• Require   Extended Protection for Authentication will be used for all connections between clients and Exchange servers for this virtual directory. If either the client or server doesn't support Extended Protection for Authentication, the connection between the client and server will fail. If you set this option, you must also set a value for the ExtendedProtectionSPNList parameter.
  
  

Note:
If you have a proxy server between the client and the Client Access server that's configured to terminate the client-to-proxy SSL channel, you must also configure one or more SPNs using the parameter ExtendedProtectionSPNList.

To learn more about Extended Protection for Authentication, see Understanding Extended Protection for Authentication.

IISAuthenticationMethods

Optional

Microsoft.Exchange.Data.MultiValuedProperty

The IISAuthenticationMethods parameter specifies the authentication method that's enabled on the /rpc virtual directory in IIS. You can set the virtual directory to allow Basic authentication or NTLM authentication. Alternatively, you can also set the virtual directory to allow both Basic and NTLM authentication. All other authentication methods are disabled.

You may want to enable both Basic and NTLM authentication if you're using the IIS virtual directory with multiple applications that require different authentication methods.

Note:
When you configure this setting using the IIS interface, you can enable as many authentication methods as you want.

For more information about configuring this parameter with multiple values, see the example later in this topic.

Server

Optional

Microsoft.Exchange.Configuration.Tasks.ServerIdParameter

The Server parameter specifies the name of the Client Access server to be enabled for Outlook Anywhere.

WhatIf

Optional

System.Management.Automation.SwitchParameter

The WhatIf switch instructs the command to simulate the actions that it would take on the object. By using the WhatIf switch, you can view what changes would occur without having to apply any of those changes. You don't have to specify a value with the WhatIf switch.

XropUrl

Optional

System.Uri

This parameter is available for multi-tenant deployments. It isn't available for on-premises deployments. For more information about multi-tenant deployments, see Multi-Tenant Support.