[lug] linuxconf and sendmail config

[Scott A. Herod]

I just learned that it was possible to relay mail through
my sendmail daemon despite my telling linuxconf that there
were no valid relay hosts or domains.  This is with
sendmail 8.9.3 which should not do relay by default.  I'm
now trying to configure sendmail using sendmail.mc and
the m4 configuration tool.  Some links that I've discovered
are:
 
http://ordb.org/faq/#how_to_close
 
http://www.sendmail.org/m4/anti-spam.html
 
Can someone suggest a link to a site that will test you
without blacklisting you if you fail?
 
Thanks
 
Scott