[InterNetNews/inn] adfd72: nnrpd: Use fromhost instead of domain for e-mails

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: adfd723659ba8be9ad82a8e5577b8945169b2689
      https://github.com/InterNetNews/inn/commit/adfd723659ba8be9ad82a8e5577b8945169b2689
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-02-19 (Sun, 19 Feb 2023)

  Changed paths:
    M doc/pod/news.pod
    M doc/pod/readers.conf.pod
    M nnrpd/nnrpd.c

  Log Message:
  -----------
  nnrpd: Use fromhost instead of domain for e-mails

The newsmaster's e-mail address mentioned in the help message returned
by nnrpd now uses fromhost as the default domain name instead of the
value of the domain parameter.

Also, use the newsmaster's e-mail address in all cases, and not only
when virtualhost is set to true.

see #244