From: Hirayama, Pat (phirayamfhcrc.org)
Date: Fri Jun 26 2009 - 18:25:37 CDT

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So, the problem is with the recursion, and in fact, if it were just an alias with 3000+ addresses in a flat file, that will be handled without difficulty?

     -p

-----Original Message-----
From: Victor Duchovni [mailto:Victor.Duchovnimorganstanley.com]
Sent: Fri 6/26/2009 2:41 PM
To: Hirayama, Pat
Cc: postfix-userspostfix.org
Subject: Re: Alias Expansion Problem
 
On Fri, Jun 26, 2009 at 12:52:33PM -0700, Hirayama, Pat wrote:

> Hello,
>
> I've recently converted from sendmail, and postfix seems to be having problem with a recursive alias we use.
>
> So, in our aliases file, we have an address like this:
>
> allstaff: user1, user2, user3 ... user79, user80, allstaff80
> allstaff80: user81, user82, ... user159, user160, allstaff160
> allstaff160: user160, user161, ... user219, user220, allstaff220
> ...

Because Postfix does not modify the queue file during local alias
expansion, this is a poor way to represent the alias with Postfix.

Instead:

    /etc/aliases:
        owner-allstaff: sysadminexample.com
        allstaff: :include:/etc/postfix/allstaff

    /etc/postfix/allstaff:
            user1example.com
        user2example.com
        ... flat list of all the users ...

If at all possible ensure that the none of the addresses in the
"allstaff" file are "local", rather it is better if they are
all in a virtual alias domain, which rewrites them to local
addresses. You could even resort to:

        virtual_alias_domains = valias.example.com
        virtual_alias_maps = ... pcre:/etc/postfix/virtual.pcre

    virtual.pcre:
            /(.*)valias\.example\.com$/ ${1}example.com

and list:

    /etc/postfix/allstaff:
            user1valias.example.com
        user2valias.example.com
        ... flat list of all the users ...

anything to suppress parallel recursive alias expansion in Postfix.

--
        Viktor.

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