🚀 go-pugleaf

I want to use Smail 3.1.21 (on various systems) to route external and internal
mail to a network that that uses a non-standard user name convention.  Specific-
ally, brinkema@funnynet needs to be converted to John_Brinkema@funnynet; this
conversion is to be done only if the destination is funnynet (ie.
brinkema@oknet coming into the same smail - machine goes to brinkema@oknet
whereever that is with *no* name conversion), so alias files
don't seem to be the obvious tool.  The name brinkema exits on several machines
connected via a LAN and name should NOT be touched if sent to those machine.

So what I *think* I need is a route sensitive aliaser.  It is not possible
to change the naming conventions on funnynet (it is an office-automation
machine manageged and used by 'real people' who
like full names as well as us UNIX types that live both there and on UNIX
machines).

Any ideas?  jb.