On Tue, Oct 07, 2003 at 01:46:43PM -0300, Agustín Ciciliani wrote: > These are some of the mail servers that I can't reach with my Debian: > mail.matrocolayasoc.com.ar, mail.skytel.com.ar, mail.ecogas.com.ar, and > others...
Do you have ECN enabled in your kernel? You can check this by doing
"cat /proc/sys/net/ipv4/tcp_ecn"... if so, it will display "1". In this
case, try disabling it ("echo 0 >/proc/sys/net/ipv4/tcp_ecn") and see
if the problem persists.
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