That is a legacy item form the old plan that was to be removed with the updates, it will be removed within the next 24 hours.
Auto responders have caused us more than 8 blacklistings that I know of off hand, and therefore were disabled, and many others hosts also disable them now due to this. It is abused by spammers as well with forged headers to send spam in your clients name, which is bad for your client as well.