+ # example line:
+ # 2022-02-09 22:08:14.683 [59759] socket bind() to port 25 for address 10.8.0.28 failed: Cannot assign requested address: daemon abandoned
+ if [[ -e /etc/systemd/system/exim4.service.d/backup.conf ]]; then
+ regex="socket bind() to port 25 for address"
+ grep "$regex" $pl >> $pl-archive ||:
+ sed -i "/$regex/d" $pl
+ fi
+