Access from tor banned sometimes?

[yago]

Sorry I don't know what was my last IP.

Not a big problem, because I just have to do "sudo killall -HUP tor" to obtain a new IP.

[Amazon]

We banned some IP range before to prevent bot. May be it is too strict. Can you PM me the IP that you can't access to site?

[yago]

After using this site from tor for some time, today I got this message:

"This request has been denied for security reasons. If you believe this was in error, please contact support."

I changed my tor exit node (IP) to post this, and seems that now it works.