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Re: switching from 2.2 to 2.4 kernels

rich <rich@octopus.adsl.dk> writes:

> 1. Does anyone have any ideas what differences between 2.2.19 and 2.4.9 might 
> cause this? 

There is probally a broken router between you and you mailserver which
doesn't support ECN.

Complain to you internetprovider and make a temporary fix by
disabeling ECN:

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

> 2. Is it a bug in the 2.4.9 versions that they break the 2.2.19 functionality 
> without telling us?

No it adds functionality. Unfortunately some routers breaks current
standards. (Yes at last ECN is on the standard track. See RFC3168)

Når folk spørger mig, om jeg er nørd, bliver jeg altid ilde til mode
og svarer lidt undskyldende: "Nej, jeg bruger RedHat".
                                -- Allan Olesen på dk.edb.system.unix

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