Mail::ListDetector::Detector::Ezmlm(3pm) on Linux
The text a88f09d2998c, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
Ezmlm message detector
The text a88f09d2998c, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
Ezmlm message detector