Re: 553 5.7.1 Sender address rejected: not logged in

From: mouss (no email)
Date: Fri May 16 2008 - 05:12:32 EDT

  • Next message: AlxFrag: "Re: 553 5.7.1 Sender address rejected: not logged in"

    AlxFrag wrote:
    > All i want to do is to relay emails from users that are SASL
    > authenticated.
    > It is also desired to relay emails from users with the correct "from
    > address".
    > With the current configuration when a user tries to send an email
    > using a different username that he has used to login, he gets the error:
    > Failed to add recipient: test at mydomain [SMTP: Invalid response code
    > received from server (code: 553, response: 5.7.1 <test1 at mydomain>:
    > Sender address rejected: not owned by user test)]
    > The problem appears when a user has activated a forwarding mechanism
    > to a different mail server and forwarded messages are sent to my server.

    Enforcing authentication breaks forwarding ;-p
    There is nothing you can do about this except reject the forwarded mail
    or accepte non authenticated mail...

    suppose user A sends mail to an external account which forwards to user
    B (both A and B are in your domains). then your server will get mail
    with A as sender from an external MTA (which won't auth because). and
    the problem is related to B setup, so you can't just exclude A from your
    sender login maps.

    you can however accept unauthenticated mail from a list of MTAs, but
    that may be a lot of work...

    > I don't know if it is possible with postfix to:
    > 1) Relay emails only from sasl authenticated users,
    > 2) force the users to use their real username for sending emails,
    > 3) accept forwarded messages from other mail servers.

  • Next message: AlxFrag: "Re: 553 5.7.1 Sender address rejected: not logged in"

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