Alexander Dalloz schrieb:
Stefan Kuhlemann schrieb:
even more strange - today around 10:00 o'clock the sendmail started
to work normal until 16:00 o'clock. (with nothing changed since
sunday 22:00)
My feelings tell me that the reason might be some strange
'ill-broken' firewall network stack or some weird netwok
communication issues (like the 'fun' with the ECN-flag some years ago)
I'm tomorrow 'on-site'......
Stefan
Try following kernel parameter change
sysctl -w net.ipv4.tcp_window_scaling=0
and see if that helps. TCP window scaling behaviour changed with
kernel 2.6.17 to be again more aggressive[1]. Some other systems are
just broken in this regard.
Alexander
Thanks.
I'll try that tomorrow :-)
Stefan
--
"The amazing thing about technology is it's a product of human creativity, and we'll never run out of that."
Richard H. (Dick) Lampman
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