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From: "m.roth@5-cent.us" m.roth@5-cent.us To: CentOS mailing list centos@centos.org Sent: Tuesday, October 16, 2012 7:49 AM Subject: Re: [CentOS] setting up postfix
Larry Martell wrote: This should be an easy one. I'm trying to get postfix going. I've never done this before. I followed the directions at http://wiki.centos.org/HowTos/postfix. I opened port 25:
iptables -I INPUT -p tcp -m tcp --dport 25 -j ACCEPT
But I don't receive the mail. In a file in /var/spool/postfix/defer I see:
alt2.gmail-smtp-in.l.google.com[2607:f8b0:400d:c00::1a]:25: Network is unreachable
Have I missed a step or done something wrong?
Have you tested to see if tcp/25 is really open? From another system:
$ telnet ip.of.postfix.box 25
Do you get a sendmail/postfix message of some sort?
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