Re: backupmx with Postfix

From: Mark Goodge (no email)
Date: Tue Jul 01 2008 - 05:42:02 EDT

  • Next message: Nicolas Letellier: "Re: backupmx with Postfix"

    Nicolas Letellier wrote:
    > On Tue, 01 Jul 2008 11:04:53 +0200
    > mouss <> wrote:
    >> If you have relay_recipient_maps set, then postfix will _reject_, not
    >> bounce. it is the "previous" MTA that generates the bounce. This is why
    >> you should reject on the first server that you manage and let others
    >> bounce or do whatever they want.
    >
    > But, if Postfix rejects a mail, it sends a mail to inform that the mail has been rejected or not?

    No. The server that has the mail rejected sends the mail. Consider this
    sequence of events:

    1. User sends mail out via server A.

    2. Server A contacts server B to pass the message on.

    3. Server B accepts the mail.

    4. Server B contacts server C to pass the message on.

    5. Server C rejects the mail.

    6. Server B emails the sender to say that the mail was rejected by C.

    You only need to worry about this if you manage server B (as it makes
    you a potential source of backscatter). If you manage server C, then all
    you need to do is reject mail you don't want.

    Mark

    -- 
    http://mark.goodge.co.uk - my pointless blog
    http://www.good-stuff.co.uk - my less pointless stuff
    

  • Next message: Nicolas Letellier: "Re: backupmx with Postfix"





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