On 2018-02-12 22:50, Viktor Dukhovni via Exim-users wrote:

> > My server runs in a KVM.  Doesn't that rule out hardware TCP
> > offloading as the culprit?
> No, it rather makes the problem more likely.  Virtual machines are
> often behind NAT, which can be incompatible with TCP offload, and
> there are likely other issues.  If you search the web for "KVM TCP
> offload" you'll see many problem reports and advice to turn it off.

Ok, it was on, I disabled it.  We'll see soon enough if your hypothesis
is right :-)

I am slightly surprised I could do that; I'd have expected only root on
the host machine to have that power.

Please don't Cc: me privately on mailing lists and Usenet,
if you also post the followup to the list or newsgroup.
To reply privately _only_ on Usenet, fetch the TXT record for the domain.

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