[Evolution] Evolution Signature Scripts Backdoor

[Murray Trainer <mtrainer central-data net>]

Hi All,

I have been looking at trying to prevent command-line access to our
users and found the link below that applies to Gnome:
  
http://www.gnome.org/learn/admin-guide/latest/ch10s03.html

Evolution has the ability to run any script as a signature file which
gets around the lock-down features above.  Is there any way of turning
off Evolution's ability to run a script.  If not it seems like a needed
security feature.

Thanks

Murray