On Sun, Jan 23, 2022 at 01:48:05PM +1100, raf wrote: > If your cleanup_submission service is managed outside > of Postfix somehow by something that creates a socket > in /var/spool/postfix/public/cleanup_submission, > perhaps it isn't functioning.
THere is no mechanism for running cleanup(8) externally rather than managed by master(8). The cleanup(8) service communicates with master(8) via undocumented internal interfaces. -- Viktor.