12/28/04: NetIQ MailMarshal for Exchange and general SMTP servers protects enterprise mail against viruses and spam and now adds direct support for SURBLs.
http://www.netiq.com/products/mma/default.asp
Here's their Knowledge Base article about using SURBLs.
http://www.netiq.com/kb/esupport/consumer/esupport.asp?id=NETIQKB44382
12/31/04: Invariant Systems has written a Windows URI extraction tool invURIBL which can check message body URIs against SURBLs. It can be used standalone or as plugin to any Windows mail server that can call an external application and process the return code. For example, it is finding use with Declude for Imail.
http://www.invariantsystems.com/invURIBL/default.htm
More news and links are at:
http://www.surbl.org/news.html http://www.surbl.org/links.html
Jeff C.