On Wed, 2007-01-24 at 16:02 -0800, Eric Messick wrote: > They open a connection from port 40774 to my port 25, sending SYN. > I reply with SYN ACK. > They reply with ACK, completing the opening of the connection. > They send FIN ACK, immediately closing the connection. > I reply to the initial open with an ACK, followed by the text "220 > syzygy.com ESMTP". > I then notice that they've closed the connection and send FIN ACK. > They reply to my last ACK and data packets with a pair of RST packets, since > they closed the connection without waiting for this data.
I suspect a broken firewall. Since it doesn't seem to happen when I connect to the mailhost for syzygy.com, I suspect a broken firewall at _their_ side. Can you get them to show a tcpdump of their end of the conversation? -- dwmw2 -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
