Yes, that sounds like what's happened - though we haven't confirmed with our proxy provider yet but your message indicates thats what they're doing.
I don't think any of those warnings should do get you onto a spam list.
I think this is the biggest spam IP list, check your IP here (they should also give instructions on how to get your IP address removed):
Hope that helps - btw, nothing to worry about unless you're losing access to certain services (e.g. our proxy) and to some extent some emails you send may go to spamboxes (in case anyone tells you they're not getting your emails, that could be happening).
If you want your IP removed from our proxy services block list - I can send it to them for removal - please send it to me in an email, alok at hiddenreflex dot com