I have noticed that when I try to sign up for things that require an email address over Tor, I am almost always blocked from doing so and told that I am a spammer. I believe that the cause of that is that the exit relays are being marked as spammers, either because someone has been spamming a lot over Tor or some spam identification system has a problem with Tor (I am assuming the former).
Is there anything we can do to fix this?