On Fri, Aug 12, 2022 at 06:30:21AM +0100, Andrew C Aitchison via Exim-users
wrote:
> > It looks *strongly* like an interoperability problem between the Linux
> > kernel TCP implementation and the Google TCP/TLS termination front-ends,
> > unless all the Exim users who lately somewhat regularly show up to
> > report this issue are behind some as yet unidentified set of
> > middle-boxes that break TCP state.
> >
> > It would perhaps be useful to also see any reports of success sending
> > sufficiently large messages to Gmail from the reported Exim builds and
> > Linux versions. If some users are not seeing any issues, then it would
> > be good to know how their situation is differs.
>
> Might be good to know who is using openssl and who is using gnu-tls,
> so that we can rule in or out the tls implementation.
Surely irrelevant, this is a *TCP-layer* problem. If not in the Linux
kernel, perhaps in the TCP offload in the network card.
--
Viktor.
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