Procmail error

[Rem P Roberti]

Probably the wrong forum for this, but since it's on a freebsd system:

I have mutt installed on two other freebsd computers.  I fetch pop mail
via getmail, and procmail puts things where they belong.  I just
installed freebsd 7.0 on another computer with what I thought were the
exact same settings for all of the mail programs involved.  When I try
to retrieve mail I get this error message:

Delivery error (command procmail 3695 error (127, exec of command
procmail failed (refuse to invoke external commands as root or GID 0 by
default)))

I'm a relative newbie here and would appreciate it if someone could give
me a heads up on this.

Rem