Shot in the dark, but maybe ident? Try forwarding port 113 (even if it's not open on the mail server). Then ident requests will get an ICMP Dest-port-unreachable from the server instead of the ActionTec just dropping them on the floor. And Nate had a good suggestion about seeing if the data from lkml is actually making it past the ActionTec - so check your mail logs or run tcpdump and see if you're getting anything from them. On Fri, 2004-03-12 at 09:31, Florin Iucha wrote: > On Fri, Mar 12, 2004 at 09:14:10AM -0600, Nate Carlson wrote: > > On Fri, 12 Mar 2004, Florin Iucha wrote: > > > First of all thank you guys for the info on the 1.5 Mbps DSL. I just got > > > it and it works great! > > > > > > Well, almost... > > > > > > I NAT-ed ports 22, 25 and 80 to my internal box. So far so good. I > > > started getting mail from the lists I am subscribed to, except LKML.=20 > > > When I try a portscan of my domain (iucha.net) from the office, I get > > > only ports 22 and 80 open.=20 > > > > > > Telnet 25 from my office SUN machine fails with "connection timeout". > > > Telnet 25 from my office Windows2k machine succeeds. Ssh from my office > > > Windows2k machine fails with "connection timeout". > > > > > > I tried testing with http://vger.kernel.org/mxverify.html. The first two > > > fail with "connection timeout", the third one succeeds! > > > > > > What's up? What should I do? > > > > Do you have ECN turned on? > > I suppose I do. If I do a > echo 0 > /proc/sys/net/ipv4/tcp_ecn > I can browse to http://vger.kernel.org. If I write 1, I cannot. > > I was getting lkml fine before the switch (Cisco675/CAP -> > Actiontec1524/DMT). I have the same ISP/public IP. I didn't even > reboot the internal mail server. > > > One good thing to do would be put a hub between your Linux box and the > > Actiontec, put another Linux box on that hub, and run Ethereal or tcpdump. > > This will let you see if the Actiontec is actually passing the traffic or > > not. > > I will try to do that. What puzzles me is that I get (some) mail; I get > tclug just fine. I might be losing some that I am not aware of, but I > am aware of LKML ;) > > Thank you, > florin _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list