From: Victor Duchovni (Victor.DuchovniMorganStanley.com)
Date: Tue Feb 20 2007 - 15:59:33 CST

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On Tue, Feb 20, 2007 at 04:50:24PM -0500, Tim Calvert wrote:

> We allow users to have what we call a vanity address (in the form of
> firstname.lastname) if they want to. In order to rewrite the headers of
> incoming email from firstname.lastnamemarshall.edu to
> usernamemarshall.edu, the guy who designed, installed and configured
> the Postfix system used a virtual alias database. Unfortunately, he
> neglected to provide a means for the From headers to be rewritten on
> outgoing email from usernamemarshall.edu to
> firstname.lastnamemarshall.edu. That's the problem I'm trying to fix.

main.cf:

    canonical_maps = hash:/etc/postfix/canonical
    # Postfix >= 2.2: adjust to meet your needs...
    local_header_rewrite_clients =
            permit_mynetworks,
        permit_sasl_authenticated

canonical:
        lusermarshall.edu Leo.Usermarshall.edu

> What I did:
> After some reading, I came to the conclusion that this task is generally
> performed by a canonical database.

Yes, or in some cases (probably not yours) a "generic" database.

> I first set it up with LHS=username
> and RHS=firstname.lastname, as the example showed in the Address
> Rewriting Readme, and added canonical_maps = hash:/etc/postfix/canonical
> to main.cf.

Did you append domain to the keys? What version of Postfix?

> That didn't work at all. After some more reading, I stumbled
> across something (and I have no idea now where it was) that indicated
> the RHS needed to be an address. So I changed it to
> firstname.lastnamemarshall.edu. That sort of worked.

Define "sort of"?

> From the messages I've sent to my own Yahoo address to test this, the
> Return-path is getting rewritten, which I think is the Envelope from,
> but the message From header is not being rewritten.

Perhaps "local_header_rewrite_clients" needs tuning...

--
        Viktor.

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