Jeffrey: This could be a firewall issue as Ed suggests, but given my experience with Red Hat 7.2 you could be up against an "off-by-default" situation that Red Hat set up. The default sendmail configuration for Red Hat 7.2 is to listen only on the IP address 127.0.0.1 and port 25. This will cause other systems on the network to be unable to connect to sendmail on your box, even though sendmail is running fine and you can connect to it on localhost. If you run the following command "netstat -an | grep LIST | grep ^tcp" you will see all of the TCP listeners on your system. You should see something like this: [3] danja.int.ca.pason.com:/home/ockers > netstat -an | grep LIST | grep ^tcp tcp 0 0 0.0.0.0:6000 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:515 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:110 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:989 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:1024 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN Notice how on my system I am listening on the address 0.0.0.0 and port 25. This means that my system is accepting connections on all network interfaces for port 25 (sendmail). On your system, I am betting that the listener is "127.0.0.1:25" and that you do not have sendmail bound to any other interfaces. You can verify this by running the netstat command. The way to fix this is in the /etc/sendmail.cf or in the /etc/mail/sendmail.mc. Here is the sendmail.mc information: dnl This changes sendmail to only listen on the loopback device 127.0.0.1 dnl and not on any other network devices. Comment this out if you want dnl to accept email over the network. dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA') The daemon_options above are commented out. Yours are probably not commented out. If you comment it out, then run "make" in the /etc/mail directory, then restart sendmail, your problem should go away. Hope this helps. --JimO > On Tue, 2002-02-05 at 10:23, Jeffrey Greer wrote: > > Hi, > > > > I'm new to this list. I plan to attend my first CLUE meeting next week and I > > would like to get involved. > > > > I've been using linux for 4 years, but I have not done much real system > > administration. I am having a problem setting up email on a dedicated linux > > server I just purchased. The remote machine is buddha.whitebuddha.com. When > > I send email from a remote machine via smtp it just gets lost. Sendmail is > > running at buddha and I can send email locally with pine, but nothing comes > > in remotely. I can't find anything in /var/log/maillog. I'm running redhat > > 7.2. I've configured the nameserver at www.dnsmadeeasy.com. Dnsmadeeasy.com > > automatically edits the soa file through a web form. I've set up the MX > > record to point to whitebuddha.com. > > > > I don't really have any idea how to troubleshoot this or what docs to look > > at. Could someone here give me some suggestions? > > > Looks like you might have the firewall configured so that it isn't > allowing incoming SMTP traffic. You can use "lokkit" to check and/or > edit the firewall rules. -- Jim Ockers (ockers@ockers.net) Contact info: please see http://www.ockers.net/ Fight Spam! Join CAUCE (Coalition Against Unsolicited Commercial Email) at http://www.cauce.org/ .