I am looking for internet information about installing and using smtp service in iis 4 any suggestion? thanks

Using the SMTP Service with IIS 4.0 Monitoring and Tuning the SMTP Service The SMTP Service provides several logging features you can use to track operational details. You can combine the SMTP Service log information with the IIS Service log information, or you can track the SMTP Service log information in a separate file. You can use Open Database Connectivity (ODBC) logging to direct the log information to an ODBC target such as a database. Keep in mind that if you turn on logging, you will add overhead to the server. To enable logging, select the properties for the Default SMTP Site, and open the SMTP Site dialog box. Select the Enable Logging check box (as Screen 3 shows), and select the log type from the Active log format list. Click Properties on the SMTP Site dialog box, and select the appropriate options to change the Extended properties. You can monitor the number of connections for the SMTP Site by selecting the Current Sessions folder in the ISM, as Screen 2 shows. The Current Sessions folder displays all users currently connected to the SMTP server and shows how long they have been connected. Performance Monitor can also track SMTP Service actions. The SMTP Service installs the SMTP Service object with several counters. Some of these counters measure average statistics and the local and remote queue lengths, and other counters provide more detailed information about the SMTP server. The SMTP Service documentation suggests that you monitor the Local Queue and Remote Queue counters. If either counter exceeds zero, the server is receiving more messages than it can process. You can tune the SMTP Service in several ways. You can specify the IP address for the smart host instead of using the server name, and you can limit the number of concurrent connections to the SMTP server to control the server load, as I mentioned previously. You can also set the maximum number of outbound messages per connection in the Messages dialog box to further tune the performance. Another performance option lets you control any single remote domain. You set this property in the Outgoing Connections area of the SMTP Site dialog box to control the maximum load that one domain can place on the server. Security The SMTP Service can use Transport Layer Security (TLS) to encrypt mail messages before sending them to the mail server. You can configure TLS for the entire SMTP Service or for each domain. Before you set up TLS, you must install a certificate from a Certificate Authority such as VeriSign (http://www.verisign.com). To enable TLS and encrypt messages for the SMTP Service, select the properties for the Default SMTP Site and select the Directory Security tab. Under Secure Communication, select the Edit option and select the Require Secure Channel check box. To enable TLS for a specific domain when sending outgoing messages, display the domain's properties, click Outbound Security and select the TLS encryption check box. Other security options you can use include assigning specific SMTP operators, and setting the authentication level for the SMTP Service. You can also change the authentication level for each domain. Reliable Upgrade IIS 4.0's SMTP Service is a powerful new feature. Now you can perform messaging-related functions without purchasing a separate mail component for the site. This built-in functionality makes setting up messaging easier and provides you with a reliable upgrade path as Microsoft enhances the mail features of IIS.