Quoting Clarence (c5666305@hkstar.com):
> I would like to know if anyone have setup netbsd-current as a mail server
> withh dynamic DNS/IP using sendmail.  If yes, would you please show me
> your sendmail.mc or show the direction of it.  Thanks.

When I had that situation I was mostly dealing with low
volumes (my mail).  Running "sendmail -bs" out of inetd.conf
worked just fine and mitigated a lot of the problems.

If that doesn't address your question, perhaps you might re-post
with an actual question/problem described.