email auto-reply limits removed?

[ShakeelW]

The option to limit an email auto-reply (example: 1 response per recipient per day) has been removed in Plesk Panel 10 it seems. If an account gets any amount of spam (with fake sender addresses) or other accounts with auto-responders on.. isn't this going to throw the auto-responder into an infinite loop responding to everything it receives?

I couldn't find anything on why the limits were removed or how their operation works now. Setting up an auto-responder that only gets a group of people upset isn't the kind of test I want to risk.

Thanks for any assistance.