Updated Step

[m.w.chang]

change log for sa.html
- remove un-ncessary rules in the sample procmailrc
- reset author's email id to avoid spam. :P

change log for proftpd.html
- a "no" in proftpd.conf should have been "off"
- add more directives in the sample proftpd.conf
- fix some erratic comments in proftpd.conf

Nobody wrote:
> to incorporate the following:

-- 
    .~.     Swiftly. Silently. Invisibly. In Linux we trust.
   / v \
  /( _ )\   http://www.linux-sxs.org
    ^ ^     news://news.hkpcug.org