On Jan 9, 2013, at 8:58 PM, Julian DeMarchi wrote: > This is the first RBL I have seen list a /24 for lack of PTRs. Not for > sending spam, but just PTRs alone. How do you explain this to your > customer?
We're small shop, but our policy is not to accept email from addresses without PTRs. And we have a long list of pool/dhcp/dyn/resnet PTRs we don't accept mail from as well. I tried SpamRats a few years ago, but found them to have too many false positives. Then, they were trying to be early detectors of spam orginiating from static IP cable/DSL customers. Good idea, but poorly executed in operation. --Chris
