Forefront DNSBL… Yeah or Nay?

As you might guess, DNSBL stands for DNS Blocklist.  While it’s not a new technology, the usefulness of various DNS/RBL blocklists in fighting spam is indisputably immense.  Over the years I’ve heard both the success stories from folks who implemented RBLs in their Exchange server deployments, and I’ve heard some horror stories from the folks…