Below is the point of contact were were given after MXTools stopped offering SURBL.
support@securityzones.net
Hopefully as a SURBL vendor they can help your client get de-listed.
Thank you, Andy!
Anne
Anne P. Mitchell, Attorney at Law CEO/President, Institute for Social Internet Public Policy Member, Cal. Bar Cyberspace Law Committee Member, Asilomar Microcomputer Workshop Committee Author: Section 6 of the Federal CAN-SPAM Act of 2003 Ret. Professor of Law, Lincoln Law School of San Jose Ret. Chair, Asilomar Microcomputer Workshop