Postfix will not send on LAN

Discussion in 'Server Operation' started by owemeacent, May 10, 2014.

  1. owemeacent

    owemeacent New Member

    I've been trying to setup Postfix on my server for this computer lab for 1 week now. I installed it on ubuntu 14.04 LTS, I did the apt-get postfix and configured it for the internet site, I also installed dovecot and configured it to. When I send mail to a user on the same computer, it gets it fine, but I cannot send to any other computer on LAN. But I know the server can see it because I can ping all their hostnames. I'm not using DNS or anything, just the basic postfix installation. Any help is greatly needed. I am desperate, I have tried on Ubuntu, Gentoo, and Arch forums with no one being able to help me. I really need help. Any resolution would be greatly appreciated:eek:
  2. srijan

    srijan New Member HowtoForge Supporter


    Which guide you have implemented to install the server?

    Check the status of ufw & IPtables. May be they will be blocking the communication.
  3. owemeacent

    owemeacent New Member

    I don't have iptables setup yet. I'm trying it out before deploying for real.
  4. srijan

    srijan New Member HowtoForge Supporter

    Please paste the output of


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