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I'm really struggling with Postfix setup. I'm getting the probably with a non-existant domain for servers that check it - for example (domain name changed to "my-domain.co.uk"): 707974B8028: host mx01.1and1.co.uk[212.227.15.150] ...
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  1. #1
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    Mar 2012
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    Postfix setup problems


    I'm really struggling with Postfix setup. I'm getting the probably with a non-existant domain for servers that check it - for example (domain name changed to "my-domain.co.uk"):

    707974B8028: host mx01.1and1.co.uk[212.227.15.150] said: 421 invalid sender domain 'server1.my-domain.co.uk' (misconfigured dns?) (in reply to RCPT TO command)

    The "hostname" command returns "server.my-domain.co.uk"

    In the Postfix main.cf I have:

    myhostname = post.my-domain.co.uk
    myorigin = server.my-domain.co.uk

    The thing that is mystifying me is where it is getting "server1.my-domain.co.uk". The VPS originally had a hostname of just "server1", but I can't find any references in the configuration files to "server1" - I've just no idea where it is getting that from, and it seems to be ignoring the configuration directives.

    Any suggestions gratefully received,

    Tony

  2. #2
    Just Joined!
    Join Date
    Feb 2012
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    The Netherlands
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    10
    I think that still there's something wrong with your network/hostname settings. Although it is a long time I installed Postfix, I did have similar issues when I wanted to change the hostname. So I think you are missing something.
    What helped me at that time was to install Webmin. They have a page where you have an overview of your network and hostname settings. That quickly gave me insight in where I had left an unchanged field.

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