[In the message entitled "RE: Schneier: ISPs should bear security burden" on Apr 29, 15:32, "Miller, Mark" writes:]
Unfortunately, a lot of static "business" DSL IP space is still on
those lists and legitimate mail servers can get blocked. I usually use
the DUL as a "white list" to negate hits on the traditional dnsbls since
those are almost always stale.
We have worked very hard with the ISPs to ensure that legitimate static space
isn't on the lists. We also do extensive amounts of work to ensure that
isn't the case.
You may be thinking of some other list, not the DUL.