Connection from 74.201.84.163 rejected for policy reasons. Host found in DNS blacklist at dnsbl.sorbs.net

Connection from 74.201.84.163 rejected for policy reasons. Host found in DNS blacklist at dnsbl.sorbs.net

Connection from 74.201.84.163 rejected for policy reasons. Host found in DNS blacklist at  dnsbl.sorbs.net
This is the third time we are facing the same issue. It's possible to change this domain to another IP?
Regards

DS