I am trying to (temporarily) lower
smtpd_policy_service_max_idle on postfix 2.3.8 from 300s to 5s to debug a possible client-side problem. The following seem to state that my change is accepted, but when I purposely leave the client idly connected for >> 5 seconds I don't see a timeout disconnect message in mail.log that I used to see when the value was 300s.
sudo postconf -ve smtpd_policy_service_max_idle=5s; sudo postconf | grep _idle ipc_idle = 100s max_idle = 100s smtpd_policy_service_max_idle = 5s
Do I need to restart postfix to for the setting to take effect? Is there another timeout value that provides a (higher) lower bound?