On Friday 31 October 2003 20:03, you wrote: > We could not receive mail from the Hormel (Redhat List) server. We > were receiving the rest of our mail without a problem. > > Our server has three internal IPs on two interfaces; eth0, eth0:1, > eth1. > > The router sent (NAT'd) services to the appropriate IP. Anything that > wasn't NAT'd was sent to eth0:1 where the packets were logged and > then rejected by IPTables. This was done exclusively through > FILTER/INPUT. There were NO - zero - other rules in the firewall. > > Now here's the weird part. Packets from Hormel - and ONLY Hormel - > were mangled. They showed up as UDP instead of TCP and then were > assigned to an array of ports - none being 25. > > As soon as I stopped IPTables, the problem went away which means that > there is no problem on the router end. Moreover, how could this > possibly pertain ONLY to the Hormel server. > > Does anyone have any ideas? If you capture your network traffic try tcpdump on the packet data. Something like: tcpdump -n host 66.187.233.30 and not port 25 \ -r packetfile.dump to see if they arrived at your network in a mess. Regards, Mike Klinke -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
