Re: wierd and specific SMTP connectivity problem between fedora core 2 and Lotus Domino Release 6.5.1

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Am Fr, den 24.09.2004 schrieb Stephen S. Kelley um 1:36:

> What could be the problem connecting from these fedora 2 boxes to this
> one Lotus Domino Release 6.5.1 SMTP server and how can I fix it?

> Dr. Stephen S. Kelley, President

Either the OpenBSD the Domino is running on has a problem or a router in
front of it. Set

echo 0 > /proc/sys/net/ipv4/tcp_window_scaling

on any of the FC2 machines and you will instantly get an quick response
from the SMTP, without any lags. If TCP window scaling is on, then you
get the described behaviour. There was quite some discussion about
problems with TCP window scaling and kernel 2.6, i.e. articles available
on lwn.net.

Alexander


-- 
Alexander Dalloz | Enger, Germany | GPG key 1024D/ED695653 1999-07-13
Fedora GNU/Linux Core 2 (Tettnang) kernel 2.6.8-1.521smp 
Serendipity 01:54:37 up 3 days, 3:58, load average: 0.39, 0.21, 0.13 

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