Topic Last Modified: 2007-02-13

Use the General tab to identify the IP address that is used by the SMTP virtual server, configure multiple identities for the SMTP virtual server, set the connection limit and time-out, and to enable logging. By default, the SMTP virtual server can respond to connection requests for all IP addresses configured on the computer. The following options are available on the General tab.

Fully-qualified domain name

This read-only property shows the fully-qualified domain name (FQDN) that is assigned to this SMTP virtual server. To modify the FQDN, select the Delivery tab and then click Advanced.

IP address

By default, the SMTP virtual server can respond to connection requests for all IP addresses that are configured on the computer. To assign a specific IP address for the SMTP virtual server, use the drop-down menu to select an IP address.

Advanced

Select this option to assign multiple IP addresses for this SMTP virtual server or to assign a TCP port that differs from the default SMTP port 25.

Limit number of connections to

Select this check box to limit the maximum number of concurrent incoming connections for this SMTP virtual server and then type a value. The minimum is one connection. When the check box is not selected, no limit is imposed. Note that setting connection limits can make it more difficult for someone to initiate a denial of service (DoS) or other malicious attack against your virtual server.

Connection time-out (minutes)

This setting determines how long an individual incoming connection can remain in an inactive state before the connection times out and ends. By default, this value is set to 10 minutes.

Enable logging

You can use logging to track commands the SMTP virtual server receives from SMTP clients over the network. Auditing server activity with log files is a good way to detect if unauthorized external users are trying to access your virtual server, or if internal users are trying to access resources that they do not have permission to access. Select the check box to enable logging and then configure the following options:

• Active Log Format   Use the drop-down menu to select one of the logging formats:
  
  
  • Microsoft Internet Information Services (IIS) Log File Format   This log file is recorded by using a fixed ASCII format.
    
    
  • W3C Extended Log File Format   This log file format is the default option. Information is recorded in an ASCII form and can be customized. This lets you select the items that you want to track.
    
    
  • National Center for Supercomputing Applications (NCSA) Common Log File Format   This log file is recorded by using a fixed ASCII format.
    
    
  • ODBC Logging   This format uses an open database connectivity (ODBC)-compliant database to store logged data for a fixed set of data fields.
    
    
• Properties   Use the Logging Properties dialog box to configure the new log schedule and log file directory.