I just installed Fedora, and installed Big Brother for network monitoring. This is my first time setting up linux, so sorry for a newbie question.
I need the server to have SMTP running, so that users in our network can send e-mails to the server, which will fire off a script to deal with the e-mail. For example an admin wants to acknowledge an alert, he sends mail to bb@xxxxxxxxxxxxxxxxxxxxxxxx
Initially SMTP wasn't running on my box. So I just ran /etc/rc3.d/S80sendmail start. Okay now sendmail appears to be running. ps -aef | grep sendmail shows
root 1725 1 0 Oct25 ? 00:00:00 sendmail: accepting connections smmsp 1734 1 0 Oct25 ? 00:00:00 sendmail: Queue runner@01:00:00 for /var/spool/clientmqueue
Do "chkconfig sendmail on" to have sendmail start at boot time.
But if I telnet to port 25 on my system, I get connection refused. There is no firewall.
This is addressed in the Fedora release notes.
I assume I need to change something in my sendmail config? I read the Red Hat Linux Reference Guide and I couldn't really figure out what I need to change. I was a little concerned about this section:
dnl # dnl # The following causes sendmail to only listen on the IPv4 loopback address dnl # 127.0.0.1 and not on any other network devices. Remove the loopback dnl # address restriction to accept email from the internet or intranet. dnl # DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
But I'm not sure if I should comment that out.
You've found the right thing to change. Do as the comment says and change the DAEMON_OPTIONS line to:
DAEMON_OPTIONS(`Port=smtp, Name=MTA')dnl
> Also I tried to build a new sendmail.cf file and got this error:
m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf /etc/mail/sendmail.mc:10: m4: Cannot open /usr/share/sendmail-cf/m4/cf.m4: No such file or directory
You need to install the sendmail-cf RPM. It should work then.
Do a "service sendmail reload" after changing sendmail.cf of course.
Paul.
