ENABLING AND DISABLING THE ETRN SUPPORT

To enable ETRN support, do the following steps:

  1. Click the Alternate Name List option to enable the gateway to send ETRN requests that specify its alternate name list to all the remote SMTP hosts.
  2. Enable the Send ETRN option. Sometimes it might be useful to enable sending an ETRN request only to a specific host to which there might not be any outbound mail. This ensures that even though there is no outbound mail to that host when SMTPC runs, the host still receives ETRN requests.An option to add or delete hostnames is also available. To add a hostname, enter the hostname and click the Add button. To remove a particular hostname from the list, select an entry from the list and click the Delete button.
  3. Click the Send keep alive packets option to enable the TCP connections established over a dial-up connection (typically PPP or some ISDN connections). Some TCP/IP stacks can be configured to time out and automatically disconnect after a predetermined period of zero network activity. Under this condition, it is necessary for the gateway to keep the stack active if SMTPD is to continue receiving incoming mails. This option enables SMTPD to keep sending alive packets to maintain the dial-up connection.
  4. Click the Run a program when connection is established option. This allows the administrator to define the path of the program to be run after the Connection is made. Extra parameters regarding this function can be entered in the next section.
  5. To implement the settings, click the Apply button.

To disable ETRN support, do the following steps:

  1. Click the Send keep alive packets option to enable the TCP connections established over a dial-up connection (typically PPP or some ISDN connections). Some TCP/IP stacks can be configured to time out and automatically disconnect after a predetermined period of zero network activity. Under this condition, it is necessary for the gateway to keep the stack active if SMTPD is to continue receiving incoming mail. This option enables SMTPD to keep sending alive packets to maintain the dial-up connection.
  2. Click the Run a program when connection is established option. This allows the system administrator to define the path of the program to be run after the connection is made. Extra parameters regarding this function can be entered in the next section.
  3. Click the Apply button to immediately implement the settings.

Note If the "Enable ETRN Support" screen appears on your screen, it means that you are to configure the parameters of the "Disable ETRN Support" screen and vice versa.