On Tue, Jan 02, 2018 at 04:46:02PM +0000, Mel Beckman quoted: > "rbl.iprange.net will mark every ip address as listed to force removal of > this server."
Apparently they didn't read section 3.4 of RFC 6471:
https://tools.ietf.org/html/rfc6471#page-15
Given this behavior on their part, it would seem best to not only
immediately remove their old DNSBL from mail system configurations,
but to never add their new one.
---rsk
