Configuration help...

I want to block a certain domain's access to all addresses except one.

Any idea how I could do this?

* Jay Denebeim, Moderator, rec.arts.sf.tv.babylon5.moderated      *
* newsgroup submission address: b5mod@???         *
* moderator contact address:    b5mod-request@??? *
* personal contact address:     denebeim@???      *