From: Thibault Date: 2009-01-27T02:18:53+09:00 Subject: Re: net-smtp timeout error Hello, On Mon, 26 Jan 2009 11:25:14 -0500, Daniel Berger wrote: > I've got two RHEL3 boxes, alpha and beta. On the alpha box, the > following script works fine. On the beta box I get a timeout error > with the same script. What's happening? I think you did a check without your script like : nc mailhost.foo.com 25 telnet mailhost.foo.com 25 If not I suggest you do so in order to check if your problem really comes from your script, or from a firewall, routing issue… > I did validate that the /etc/resolv.conf and /etc/protocols files were > the same on both boxes. Maybe you could also check with tcpdump to see if packets are sent/received as attended. > This some sort of sendmail config issue? If so, any ideas what it > might be? I don't think so, since you are using SMTP you're bypassing your local MTA.