DNS Checks

Hello Community,
I just installed a fresh Carbonio CE and I am trying to set it up the best I can. When I installed my actual Zimbra sever, I included a list of clients for RBL, RHSBL, reverse RHSBL and sender RHSBL. I am not sure exactly what they do but I know it helps improve the email security. I there a place to config this in Carbonio CE? Is there a web site for recommended porst installation configuration tasks?