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Hello, I just installed and configured Postfix (I think correctly), but when you send an email I get this error (Postfix 451 4.3.0 temporary lookup failure). Do not find out the problem. What is the solution? many Thanks
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I Ihink Postfix cant read your user database, which results in this failure.
https://wiki.archlinux.org/index.php/SOHO_Postfix
Is a very good setup, try this or give us a lot more information about your problem.
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