CBL List (partially) Blocks MessageLabs

Looks like the shoe is on the other foot. Last week I was chortling that MessageLabs was tar pitting Google in an automatic response to gmail sending out so much spam. Now some of MessageLabs IPs have been blocked by the CBL. Apparently that is rather widely used. I’ve already seen rejections from Cox and Comcast. CBL is used in SPAMHAUS and other aggregate blocklists as well.
MessageLabs has reported they have worked with CBL to resolve the issue. The latest updates for CBL have removed this block in the latest update of the CBL.