The NA-NET Program

The NA-NET program handles the following:

• receipt of incoming mail for all NA-NET recipient addresses, including ordinary subscriber addresses (e.g., na.joe) and special functions (e.g., na.help, na.join, na.whois, etc.)
• receipt of bounced mail from attempts to send na-digests. These failed attempts are logged.

The NA-NET program is invoked by a modified version of sendmail whenever the modified sendmail receives a message addressed to:

@na-net.ornl.gov.

Other machines know to send mail addressed to na-net.ornl.gov to netlib2.cs.utk.edu because the latter machine is registered as the ``mail exchanger'' for na-net.ornl.gov with the Internet Domain Name System.