Problem with sendmail 8.13.7

[Stefan Kuhlemann]

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