A representative of French post office and webmail provider LaPoste announced on LinkedIn yesterday that LaPoste.net now offers support for a DKIM-based ISP feedback loop, supplementing existing support for their IP address-based FBL.
And, it's true! When you login to fbl.postmaster.laposte.net, and click on "Create New Subscription," you are now greeted with two options, IP address-based FBL or DKIM-based FBL:
From the messaging on the website, the FBL service still seems to be provided by Return Path.
This is good news for senders that authenticate their mail via DKIM, especially those who send mail via shared IP addresses.