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Old 08-01-2006, 01:52 PM   #1
wardjame
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Registered: Oct 2005
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postfix listening port


Hi All,
I just completed the wonderful postfix spamassassin tutorial located at http://www200.pair.com/mecham/spam/s...r20060630.html and everything seems to have gone ok.

I realized afterword that the isp this server is hosted on blocks traffic on port 25 so I need to adjust my postfix settings to get it listening and relaying on port 587.

I added the following entry to my iptables:
Code:
iptables -A FIREWALL -p tcp -m tcp --dport 587 --syn -j ACCEPT
And the following line to my master.cf
Code:
127.0.0.1:587   inet    n       -       n       -       -       smtpd
But I still can't connect on 587. I am testing this on the local network and port 25 is responding via telnet without any problems. There are no errors in my mail.log file and grep 587 /etc/services give me:
Code:
submission      587/tcp                         # Submission [RFC2476]
submission      587/udp
Any thoughts on what I missed to get this thing listening on port 587? Thanks much.
 
Old 08-01-2006, 03:46 PM   #2
acid_kewpie
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Location: UK
Distribution: Gentoo, RHEL, Fedora, Centos
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might be nicer for yourself if you just leave postfix alone and do a port translation on the network:
Code:
iptables -t nat -A PREROUTING -p tcp --dport 587 -j REDIRECT --to-ports 25
this way postfix remains unmessesboutwithandllathat
 
Old 08-01-2006, 04:29 PM   #3
wardjame
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Thanks for the excellent suggestion. I'm getting on with 587 locally now.
 
Old 08-02-2006, 01:32 AM   #4
acid_kewpie
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and of cource locally port 25 still works fine within your lan and the machine itself.
 
Old 08-02-2006, 11:08 AM   #5
wardjame
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It sure does. Thanks for all the help

Last edited by wardjame; 08-02-2006 at 02:03 PM.
 
  


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