The original rsync server that SURBL was using has gone away after many years due to companies merging, etc. We have been contacting rsync users over the past several months to try to get all moved over to newer servers and we were able to reach most about it. If you were on the old server and need rsync access, then please use the Data Feed request form:

http://www.surbl.org/datafeed/

If you have questions, please contact us at rsync at our domain.

Please note also the current usage policies:

http://www.surbl.org/usage-policy.html