🚀 go-pugleaf

> I recently installed MX 3.1C on some of our VAXStations, using UCX as the
> transport.  ... What [happens] is, say, a user has an address
> user@node.university.edu, the reply-to that gets generated at other sites
> in some cases is just the address user@node.  Is there something wrong with
> my MX setup, or is this a problem at the remote sites this occurs at?

The problem is at your end, with UCX (rather than MX).  This is a FAQ:

|        I believe you've bumped into a known problem with UCX.  The
|documentation suggests that the hosts file be set up with alias first and
|then the FQDN.  You need to set up the hosts file so that the FQDN is
|first, followed by any aliases.
|
|*************************************************************************
|*                                                                       *
|*                        Here, there be dragons!                        *
|*                      dragon@nscvax.princeton.edu                      *
|*                                                                       *
|*                                                Richard B. Gilbert     *
|*************************************************************************