Stopping automated submissions

[cleoni]

Hello,
I have eSyndicat 1.6 free installed and I keep on getting automated submissions of sites that are not pertinent.

I would like to do any (one is enough) of the following:

- Modifying the submission form so that it requires an answer to a simple question, so that a bit of human intelligence is required.
- Banning an e-mail (the submitter is always the same)
- Banning an IP (how to detect the IP number of the submitter by the way?)

Any hints?

I see that captchas are nowadays managed by bots, perhaps the "admin-defined-question" approach would definitely solve the problem.

Thanks in advance and please keep up the good work on this fantastic software