Mike Brudenell via Exim-users <[email protected]> wrote:
[..]
> The sad news is that I've had to give up on cutthrough_delivery and turn it
> off. The problems we were seeing:
[...]
> - Duplicate deliveries when our Exim sometimes received enough of the
> message to spool into the queue but the far end didn't get the SMTP
> acknowledgement because the connection had "stuck", so held the message in
> their queues to retry later;
Sounds like this change in exim 4.91+fixes:
JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
files in the spool were present and unlocked. A queue-runner could spot
them, resulting in a duplicate delivery. Fix that by doing the unlock
after the unlink. Investigation by Tim Stewart.
cu Andreas
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