General hostname domain email question.

Discussion in 'Server Operation' started by stefanos, May 5, 2009.

  1. stefanos

    stefanos Member


    I set up a perfect server with Debian Lenny.
    I am a bit confused about domain names and emails and I would like some clarification.

    Say I own a domain name called
    The A & MX records all point to my IP

    I have called my server with a host 'dragon'.
    and thus the hostname for the server is

    If I understand an email would be linked to a hostname.
    i.e. an actual email should look like: [email protected]

    So if I were to send an email to '[email protected]' it should be delivered to the user's account 'stephen' on dragon.

    But what happens if I want to send an email from the outside world to [email protected] and it be delivered to '[email protected]' does this work in a similar way to apache's ServerAlias? And how would you configure this is courier?

    Should & both resolve from the outside world to the same server IP or should resolve internally on my LAN only and the default for * resolve to the server's IP?

    And what should I actually use for 'System mail name'?
    1) or

    Does anyone know of a good tutorial on server host naming?

    *Domain name has been changed*

    If I am a bit confusing I can try and clarify but it's all Greek to me.

    Kind Regards
  2. topdog

    topdog Active Member HowtoForge Supporter

    Mail is routed by means of an MX record, you do not need to point the domain name to a host ip. You need to create an MX record that points to your mail server(s)
  3. stefanos

    stefanos Member

    hi topdog,

    Sorry my server died on me. Got the following error:
    (98)Address already in use: make_sock: could not bind to address [::]:80
    no listening sockets available, shutting down
    Unable to open logs

    I tried everything apt-get purge... reinstalling and nothing so I am going to format and install from scratch. I had in in my mind to do it at some point but I guess now is as good a time as any.

    As for the mail server name I think it's best to use the hostname (FQDN) of the server but this raises an issue if your server (via perl) sends an email to clients.

    I will need to look into this after the server is back up.


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