Topic Last Modified: 2007-05-16
Use the Access tab to configure client access to the SMTP virtual server and to establish transmission security. The following options are available on the Access tab:
- Access control
Use this option to select one or more authentication methods for the SMTP virtual server. Click Authentication to open the Authentication dialog box and configure the authentication options.
- Secure communication
Select the Require TLS encryption check box to enable Transport Layer Security (TLS) encryption for all sessions with this SMTP virtual server. This option is only available after a server certificate has been issued to the fully qualified domain name (FQDN) for the computer and the certificate is installed.
- Connection control
Use this option to restrict access to the SMTP virtual server. By default, the SMTP virtual server can be accessed from all IP addresses. However, you can grant access or deny access to specific IP addresses, while granting or denying access for a larger group. You can do this by specifying a single IP address, a group of addresses by using a subnet mask, or a domain name. To view access restriction options, click Connection.
- Relay restrictions
Windows Server 2008 SMTP Server blocks computers from relaying unwanted mail through the virtual server. By default, all computers are blocked from relay access except those that have met authentication requirements. You can enable relay access to the virtual server for specific computers, for a group of addresses by using a subnet mask, or for a domain. Click Relay to view relay restriction options. Be aware that the SMTP virtual server relay access setting can be overridden for a specific remote domain.