Setting up SMTP?
Shane Presley
shane.presley at gmail.com
Tue Oct 26 15:05:43 UTC 2004
Hello,
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 at mylinuxbox.mydomain.com.
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 at 01:00:00 for /var/spool/clientmqueue
But if I telnet to port 25 on my system, I get connection refused.
There is no firewall.
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. 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
So I guess I need help with what I have to modify to get sendmail
running? And if I need to modify sendmail.mc, then I need help with
how to build sendmail.cf?
Note - this system will be on the intranet. Not internet accessible.
Thanks,
Shane
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