nixos/exim: Make queue runner interval configurable and reduce it to 5m by default #107604
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Exim spawns a new queue runner every n minutes as configured by the argument to -q; up to queue_run_max can be active at the same time. Spawning a queue runner only every 30 mins means that a message that failed delivery on the first attempt (e.g. due to greylisting) will only be retried 30 minutes later. A queue runner will immediately exit if the queue is empty, so it is more a function on how quickly Exim will scale to mail load and how quickly it will retry than something that is taxing on an otherwise empty system.
ajs124
approved these changes
Dec 25, 2020
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Motivation for this change
Exim spawns a new queue runner every n minutes as configured by the
argument to -q; up to queue_run_max can be active at the same time.
Spawning a queue runner only every 30 mins means that a message that
failed delivery on the first attempt (e.g. due to greylisting) will only
be retried 30 minutes later.
A queue runner will immediately exit if the queue is empty, so it is
more a function on how quickly Exim will scale to mail load and how
quickly it will retry than something that is taxing on an otherwise
empty system.
Things done
sandboxinnix.confon non-NixOS linux)nix-shell -p nixpkgs-review --run "nixpkgs-review wip"./result/bin/)nix path-info -Sbefore and after)