Your sysadmin is a ninny.
Happily, however, the source for procmail is available
And, of course, Procmail is not required for simple archives. I am
running a number of archives on FLORA and do not have Procmail
installed. I can understand not wanting to install Procmail unless it's
needed - it's a great tool, but not necessary in this case as you can just
use Sendmail's (similar for all other mailer's) "|program" in the
We do use the same process but as we received about 600 mails a days we
had some time access conflict computer overload when many messages arrive
in the same second. So we have create a spool, the perl wrapper just write
incomming mail to the spool and a daemon read the spool periodicaly
and pass each mail to mhonarc.