On Wed, 10 Aug 2022, Viktor Dukhovni via Exim-users wrote:
> On Wed, Aug 10, 2022 at 04:00:51PM -0700, Marc MERLIN wrote:
>
>>> I've also reached out to the Gmail team. They're aware. Which is not
>>> to say that there's a quick fix in the works, the front-end connection
>>> termination devices are both non-trivial and critical, so changes will
>>> happen cautiously and likely slowly, and may be delayed by other
>>> priorities...
>>
>> Thanks.
>>
>> Whose fault is it? debian/exim, or gmail?
>
> 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.
--
Andrew C. Aitchison Kendal, UK
andrew@???
