[tor-relays] OR banned?

Hello.

I was running a Tor Relay for the past month (fingerprint 71BEBB61D0D35234D57087D035F12971FA315168) at my university and it seems that it got banned somehow. I got messages on my log like the following:

http status 400 ("Fingerprint is marked rejected -- please contact us?") response from dirserver '171.25.193.9:443'. Please correct.

I was hoping to get some information regarding this ban and how I could correct whatever was done wrong in order to get my relay up and running again.

Best wishes, Marcus Rodrigues.