Hi
I found what looks like a false positive in ob.surbl.org gm-linkMUNGED.com
This is used by http://group-metrics.com for sending confirmation emails as part of their web service extension to GroupMail (http://infacta.com)
I was about to start using the service for our own newsletter when I spotted the score.
Michele
Mr Michele Neylon Blacknight Internet Solutions Ltd Hosting, co-location & domains http://www.blacknight.ie/ Tel. +353 59 9137101 http://www.blacknight.ie/specialoffers.html