Hi Jon Thanks. There aren't any firewalls between the devices but they are far apart. I can telnet from x to a and I can ssh from a to x.
I think you are right in focusing on the connection time out from A to X , i looked on X for a service that isnt running Which makes this fail but I am not sure Which services. I see postfix and sendmail running and I have restarted them. I never see mail delivery from A in mailog on X Thanks On Feb 25, 2012, at 1:03 PM, "Jon Radel" <j...@radel.com> wrote: > On 2/25/12 10:26 AM, Bender, Chris wrote: > >> >> On telnet w IP it says unable to connect. > ... >> Its weird that the delivery on A says deferred connection timed out but on >> tcpdump I see the port 25 > > > If you can't establish a TCP connection from A to your relay server on port > 25, I'd expect all of the above. If you can't establish a TCP connection to > port 25 at all from A, I'd stop focusing on the details of the e-mail server > on the relay machine (as they're likely to be beside the point) and start > focusing on what is blocking the traffic from A. Have you audited all the > firewalls involved? To be really focused, if you see traffic (both ways) at > the relay server when A tries to talk to port 25, but A is convinced that no > TCP connection is established, either you're stomping on things at the relay > server (do your attempts to telnet to port 25 fail immediately or just sit > there for a good long time and then fail?), the reply packets from relay to A > are getting mis-routed, or A is ignoring the packets coming in from the > relay. Can you ping from the relay to A? > > There's a distinct difference between failure to establish a TCP connection > (look to the network stuff) and the e-mail server giving you an error > response rejecting your attempt to transfer mail or just quietly loosing the > mail (look to the e-mail servers). > > -- > --Jon Radel > j...@radel.com > _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
