Following up to myself, once again:

> It has been politely pointed out to me that the sendmail section in
> /etc/defaults/rc.conf contains an option string for sendmail to have
> it listen only on 127.0.0.1 and/or ::1.  I've seen that section, but
> apparently did not "read" it.  Oh, well.
>
> That doesn't change the main argument -- it's still necessary to
> "configure stuff" for the system to be able to send e-mail.

Is there a reasonable counter-argument against changing the
default to be that sendmail and smmsp runs in "local system may
only send e-mail" mode?

Regards,

- H=E5vard