Leafnode is a USENET software package designed for small sites, with a few tens of readers and only a slow link to the net.
Only groups that someone has been reading in the past week are fetched from the upstream NNTP server. When someone stops reading a group, fetch will stop reading that group a week later, and when someone starts reading a group, fetch will grab all the articles it can in that group the next time it runs.
This features make it an ideal newsserver for small sites with a non-permanent connection to the internet.
Please read and follow the installation notes in /usr/doc/packages/leafnode/README.SuSE!