There is some information and source code that deals with netmail routing
in FidoNet. Some programs are very complicated, but I don't actually see
the
problem. Each node knows who his uplinks and downlinks are (they are
specified by the Sysop), what more is there to be know? When isn't the
distribution chain as straightforward as I imagine? Hardly any information
is newer than 1993. What happened then? Isn't this a problem anymore?
Forgive me if this is off topic here, I feel this is something big that I
don't understand.

--- FMail/386 1.02