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Re: Can't send mails but I can receive

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  • Wietse Venema
    ... Well spotted. Apparently he uses A lookup instead of MX lookup. This is a definite no-no for email. % dig a freenet.de ... freenet.de. 300
    Message 1 of 12 , Sep 12, 2013
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      Jan P. Kessler:
      > > > Sep 12 04:57:06 nudin1 postfix/smtp[29110]: connect to
      > > > freenet.de[62.104.23.42]:25: Connection refused
      > >
      > > connection refused is a network problem, probably a firewall block.
      > > Perhaps your ISP doesn't allow you to run a mail server?
      >
      > Something is wrong with your DNS resolution. freenet.de[62.104.23.42] is
      > not the correct MX for @...:

      Well spotted. Apparently he uses A lookup instead of MX lookup.
      This is a definite no-no for email.

      % dig a freenet.de
      ...
      freenet.de. 300 IN A 62.104.23.42

      Wietse
    • Chris
      Hello Jan, Wietse, thank you very much - so it s not about Postfix but about my DNS setup. I ll change that in my zone settings. Hope it works after this. :)
      Message 2 of 12 , Sep 12, 2013
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        Hello Jan, Wietse,

        thank you very much - so it's not about Postfix but about my DNS setup.

        I'll change that in my zone settings.

        Hope it works after this. :)

        Bye, Chris


        Am 13.09.2013 01:16, schrieb Jan P. Kessler:
        >
        >>> Sep 12 04:57:06 nudin1 postfix/smtp[29110]: connect to
        >>> freenet.de[62.104.23.42]:25: Connection refused
        >>
        >> connection refused is a network problem, probably a firewall block.
        >> Perhaps your ISP doesn't allow you to run a mail server?
        >
        > Something is wrong with your DNS resolution. freenet.de[62.104.23.42] is
        > not the correct MX for @...:
        >
        > # host -t mx freenet.de
        > freenet.de mail is handled by 1 mx.freenet.de.
        >
        > # host mx.freenet.de
        > mx.freenet.de has address 195.4.92.211
        > mx.freenet.de has address 195.4.92.9
        > mx.freenet.de has IPv6 address 2001:748:100:40::8:111
        > mx.freenet.de has IPv6 address 2001:748:100:40::8:110
        >
        >
        >
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