http://www.reddit.com/r/ruby/comments/gz8jc/gem_is_not_working_at_all/
I'm not sure what I can do about it...I've contacted Anthony from
DNSimple and I'm waiting for him to respond.
I switched to servers in the building that I run and I'm fine. I
cannot replicate the issue where one worked and one didn't again, they
both just fail now if I switch back to the non-working servers.
help.rubygems.org <-- resolved
rubygems.org <-- resolved
update.gemcutter.org <-- did not resolve.
production.s3.rubygems.org <-- did not resolve.
If that helps any