I have redhat 9 setup on a computer, and I am trying to setup a mail server. I have sendmail installed and running, but I can't connect to the computer through port 25. I have turned my firewall completely off, and restarted, but port 25 still shows as closed. When I run a portscan on it, this what it shows;

Open Port: 21 ftp
Open Port: 22 ssh
Open Port: 80 http
Open Port: 109 pop2
Open Port: 110 pop3
Open Port: 111 sunrpc
Open Port: 143 imap
Open Port: 443 https
Open Port: 993 imaps
Open Port: 995 pop3s
Open Port: 1024

I turned the firewall off through WebMin (a gui app for linux). I've also turned it off using the redhat seup program, but nothing works.

Is there a command I can run in the terminal of the Linux machine to view the firewall settings? Is it possible my changes just aren't being saved?

Look in /etc/mail/sendmail.cf for DaemonPortOptions and ClientPortOptions.

goldcougar

As stickman stated look in /etc/mail/sendmail.cf this line should look like this

dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

The dnl in front is important

To check that Sendmail is listening on all interfaces on the command line
Result should be
Finally some ISP's block port 25 so as not to allow open relays not sure if this is the case but it may be worth doing some investigation

Pete

Thank you for the responses. However, when I type
I receive "-bash: $: command not found"

and here is the code from the config file:

# SMTP daemon options

O DaemonPortOptions=Port=smtp,Addr=127.0.0.1, Name=MTA

# SMTP client options
#O ClientPortOptions=Family=inet, Address=0.0.0.0

It appears that they are commented out. Why is that?

Okay I figured it out I edidted the .mc file, then ran a m4 command and everything works now. Thanks.

What changes did you have to make to the sendmail.mc file? i am having the exact same errors