Re: duplicate delivery elimination

From: Wietse Venema (no email)
Date: Tue Nov 01 2005 - 07:22:44 EST

  • Next message: Victor Duchovni: "Re: Dumping mail"

    Wietse Venema:
    > Arthur de Jong:
    > > Hi,
    > >
    > > We are currently in the process (almost finished) of setting up postfix
    > > (we're moving from sendmail) but there is one major issue left: we have
    > > a lot of internal aliases that we send mail to and also occasionally cc
    > > people on an alias (or have aliases with common members).
    > >
    > > E.g.:
    > > alias1: user1 user2
    > > alias2: user2 user3
    > >
    > > postfix tries to deliver to user2 twice (using postfix 2.1.5-9 from
    > > Debian/sarge)
    >
    > Fixed in Postfix 2.3. None of the duplicate filters below
    > are applicable for local(8) nested alias expansion.

    NOT fixed with mail sent simultaneously to alias1 AND alias2, but
    fixed when one alias includes the other.

    When mail is sent simultaneously to alias1 AND alias2, each
    alias is expanded by a different Postfix delivery process
    that runs in parallel with the other.

    > Wietse
    >
    > > These FAQs have some bad news:
    > > http://www.postfix.org/faq.html#duplicate
    > > http://www.seaglass.com/postfix/faq.html#aldbl
    > >
    > > But the configuration docs are a little more positive:
    > > http://www.postfix.org/postconf.5.html#enable_original_recipient
    > > http://www.postfix.org/postconf.5.html#duplicate_filter_limit
    > >
    > > The documentation is however not really clear which values are needed to
    > > eliminate duplicate delivery. I have tried several combinations (also of
    > > local_destination_recipient_limit) but haven't got it working yet.
    > > Should I add an extra call to cleanup before delivery (cleanup should
    > > eliminate duplicate envelope recipient addresses) or is this done. Does
    > > anyone have a working configuation that filters out duplicates? Would
    > > upgrading to postfix 2.2.4 help?
    > >
    > > I'm not very familiar with postfix yet, but I'm learning so bear with
    > > me. If I should RTFM, please point me in the right direction. Thanks for
    > > all responses.
    > >
    > > --
    > > -- arthur de jong - - west consulting b.v. --
    > >
    > >
    >
    >
    >


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