On Thu, 30 Jun 2005, Scot Jenkins wrote: > I have several systems that I recently upgraded from Debian woody to > sarge. On systems where I've upgraded the kernel, I have a strange > networking issue. I do secondary MX for a friend (we'll call his host > friendmail) and after the OS upgrades on my end, I started spooling mail > for him. I contacted him thinking his mail server was down but it > turned out that from my Debian mail server, I couldn't telnet to > friendmail:25. I could not telnet to any other open ports on his IP, > 80, 22, etc. I was able to telnet to other random hosts on various > ports just fine. Do you have ECN enabled? cat /proc/sys/net/ipv4/tcp_ecn ------------------------------------------------------------------------ | nate carlson | natecars at natecarlson.com | http://www.natecarlson.com | | depriving some poor village of its idiot since 1981 | ------------------------------------------------------------------------