Created attachment 253701 [details] patch Since recent version (e.g. 4.98) exim successfully creates notifier socket file in FreeBSD. But if file already exists during exim start it's just ignored with error message in log. Without notifier socket exim cannot check if there is already running exim daemon with e.g. such condition: ${if eq {$queue_size} {} }. Repro steps: - kill running exim daemon with KILL signal; - check if /var/spool/exim/exim_daemon_notify exists; - start exim daemon: service exim start; - check mainlog and paniclog: daemon_notifier_socket bind: Address already in use. This mostly happens when exim or OS emergency shutdown occurs. There is no such problem in Linux systems because exim uses abstract unix sockets there (looks like). The attached patch adds socket file removing before daemon start. exim_notifier_socket variable is added for notifier_socket setting overriding in exim configuration.