Topic Last Modified: 2007-05-16
Use the Authentication dialog box to select one or more authentication methods for the SMTP virtual server. Windows Server 2008 SMTP Server verifies the user's identity and grants access to the SMTP virtual server by using the configured authentication mechanism. By default, only anonymous access is enabled. The following options are available.
- Allow anonymous
Select this option to allow anonymous access to this SMTP virtual server. No user name or password is required.
- Basic authentication
Select this option to enable Basic (clear-text) authentication. Basic authentication transmits the password in clear text. We recommend that you require Transport Layer Security (TLS) encryption with Basic authentication to prevent compromise of user names and passwords during transmission. If you select Basic authentication, you can also configure the following options:
- Requires TLS encryption Select this
check box to require encryption of credentials by using TLS.
- Default domain Type the domain name
that is used as the default domain for Basic authentication. The
domain name is appended to the account name.
- Requires TLS encryption Select this check box to require encryption of credentials by using TLS.
- Integrated Windows Authentication
Select this option to enable the client and the server to negotiate the Windows Security Support Provider Interface. This security feature makes it possible for businesses to provide secure logon services for their customers. Integrated Windows Authentication uses a cryptographic technique for authenticating users and does not require the user to transmit actual passwords over the network.
Note: Using Integrated Windows Authentication requires a mail client that supports this authentication method.