Hello Nick! I asked our development team to look into this as our robots.txt is generated dynamically, and they explained that we do implement noindex, nofollow on some portal pages such as Tickets, Settings, Reports, etc. I think the reason we're not implementing that elsewhere is that some organizations want their KB articles being returnable via search. That said, I'd be happy to get a feature request escalated to implement some controls for administrators so this can be adjusted.
Kyle Kerst
IT Coordinator
SmarterTools Inc.
www.smartertools.com