Mail account brute force / harassment

[Marc Roos]

Say for instance you have some one trying to constantly access an 
account


Has any of you made something creative like this:

* configure that account to allow to login with any password
* link that account to something like /dev/zero that generates infinite 
amount of messages
  (maybe send an archive of virusses?)
* transferring TB's of data to this harassing client.

I think it would be interesting to be able to do such a thing.