I've did it using canonical maps :
Main.cf :
sender_canonical_maps = hash:/etc/postfix/canonical
/etc/postfix/canonical:
@test.local @test.edu
Thanks
Nasser
> -----Original Message-----
> From: owner-postfix-us...@postfix.org
> [mailto:owner-postfix-us...@postfix.org] On
> Behalf Of Luigi Rosa
> Sent: Sunday, March 06, 2011 10:49
> To: Postfix users
> Subject: Re: Domain rewriting
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Nasser Heidari said the following on 06/03/11 06:43:
>
> > Now I want to rewrite All of my emails domain from test.local to
> > test.edu when they traveling to outside network.
>
> I have many similar installations: Exchange (often on Windows SBS) inside and
> Postfix as border MTA.
>
> My solution is this, giving the domain name example.com and the exchange
> hostname exchange.example.local
>
> On the Exchange server you configure each user with _main_ SMTP address
> u...@example.com and another SMTP address u...@exchange.example.com (you
> can also add SMTP addresses for example.local, but could not be needed).
>
> In the Exchange SMTP connector you tell Exchange to use Postfix MTA as smart
> relay
> (you have to enclose Postfix IP in square brackets in the appropriate field
> of SMTP
> connector).
>
> In Postfix you create an alias table (using /etc/aliases, or a database of
> your
> choice) like this:
>
> u...@example.com: u...@exchange.example.com
> us...@example.com: us...@exchange.example.com
> us...@example.com: us...@exchange.example.com
>
> Of course you have to tell Postfix to deliver all the mail for
> exchange.example.com to
> exchange server
>
>
> If you follow this procedure, or something linke this, your email from
> Exchange will
> have u...@example.com because you have set it as the main email address
>
>
>
>
> Ciao,
> luigi
>
> - --
> /
> +--[Luigi Rosa]--
> \
>
> I have a bad feeling about this.
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