On Wed, Aug 10, 2022 at 11:21:31AM +0100, Graeme Coates via Exim-users wrote:
> This does sound something like this issue I blogged about:
> https://www.chromosphere.co.uk/2022/06/01/googles-tcp-fast-open-breaks-exim-
> delivery/
>
> The workround I have (so far!) successfully implemented with the same
> version of Exim on Debian 11 is:
>
> hosts_try_fastopen = !*.l.google.com
>
> into /etc/exim4/conf.d/transports/30_exim4-config_remote_smtp (or whichever
> config the remote transport is in depending on how you have installed Exim
> on Debian).
Thank you, that totally fixed my problem.
Marc
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