Not receiving external mail - Postfix/Squirrelmail/MySQL/Dovecot

Discussion in 'Server Operation' started by jwright8, Mar 8, 2012.

  1. jwright8

    jwright8 New Member

    First of all, I followed (mostly) this tutorial here:

    I use Ubuntu 10.04 Lucid.

    I have three virtual domains, and each can e-mail one another fine. They can also send mail externally fine. The problem lies in receiving mail from anything other than:

    a) One of the emails on the domains hosted on my server
    b) A contact form from one of the sites on my server

    Anything else doesn't get there. No error, no bounce back.

    There is nothing in /var/log/mail.log, /var/log/mail.warn, /var/log/mail.err, /var/log/ to indicate anything.

    I have also checked the MX records for my domain, and they point to:

    It might also be beneficial to say that I don't use a home server or anything, I use a Linode for hosting, so the port shouldn't be blocked.

    The output of netstat -tap is as follows:


    Any help is much appreciated. Thank you!


    The output of netstat -ntlp is as follows:


    The output of iptables -L -n -v is as follows:

    Last edited: Mar 8, 2012
  2. jwright8

    jwright8 New Member

    Everything is working fine now.

    For those that have the same problem, I looked at my own screenshots and saw the following:


    That port 25 was being blocked. So I checked, and modified, my iptables script, restarted it, and it all works.

    Thanks anyways, hope this helps someone else!

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