Enabling Transaction Logging

Transaction logs track each phase of message processing, detailing actions involved with executing each SMTP protocol command. The logs track when messages are sent, by whom, from where, and additional details associated with transmission. You can choose which logging format Microsoft SMTP Service uses for recording information.

When setting up a log file, remember that the log formats and default file names are the same as those used by other Internet Information Server (IIS) services. If you choose the default names, all transactions for all services are recorded in the same file. You can set up a separate file for each service if you want to maintain separate records. If you set up the file in a different location from the default, be sure it is stored on a local drive, not on a network.

Note Transaction logging is available in Internet Service Manager, but not Internet Service Manager (HTML).

For detailed information about transaction logging and formats, see Monitoring Message Transactions.

To enable logging that uses an ASCII text format

1. Select the SMTP Site property sheet.
   
2. Select Enable Logging.
   
3. In the Active log format box, select a transaction log format from the list.
   
4. Select Properties, and then set the log file size and location.
   
5. If you have selected the W3C Extended Logging format, select the Extended Properties property sheet, and then select the items you want to track.

To enable logging that uses the ODBC format

1. Set up an ODBC-compliant database.
   
2. Select the SMTP Site property sheet.
   
3. Select Enable Logging.
   
4. In the Active log format box, select ODBC Logging.
   
5. Select Properties, and then set the log file size and location.

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