X400: -BR option and Non-zero Restart Interval Cause ERROR 0

SUMMARY

Running the gateway with a -BR option in combination with a non-zero restart interval can cause an "ERROR 0" (MTA control program).

As a rule, error codes should NOT be 0. For instance, the "Administrator's Guide" says 0 means "successful result," implying that such a reported state cannot be an error because it is successful. This usage in gateway, however, is consistent because the -BR option overrides the restart interval (the -BT and -BD options do not). If the restart interval is non-zero, a warning message is sent to the log file with a non-zero error code.

During a restart, all gateway parameters are preserved. The -BT and -BD options work as most users expect after a restart because their values are absolute--they do not depend on the gateway start time. The -BR option is different: because it is the only -Bx option with a value relative to the gateway start (or restart) time, it is the only -Bx option that requires the restart interval to be reset to 0.