dnsblog(8postfix) on Linux
The text 8b305c010239, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
Postfix DNS white/blacklist logger
The text 8b305c010239, as Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
Postfix DNS white/blacklist logger