From: Victor Duchovni (Victor.Duchovnimorganstanley.com)
Date: Thu May 01 2008 - 18:24:17 CDT

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On Thu, May 01, 2008 at 04:17:26PM -0700, Curtis Vaughan wrote:

> This is great question, as I've been wondering how people meet gov.
> requirements on storing corp. emails with Postfix.
> As it is our problem is that some people use POP3 and delete as they
> download (I've been fighting this for years, but I can't control the
> foreign office!).
> Anyhow.... Even with IMAP, although most mail is saved, still there is
> they can delete emails from Trash and then those emails are lost.

You can get a fair wait with regexp based recipient_bcc_maps, which
allow you to capture the original envelope recipient. Merge message
copies are not sufficient IMHO as headers are not accurate/complete.

I usee a "tee" proxy that sends an encapsulated archive copy and the real
message in parallel (archive "." immediately precedes message "." and
blocks message delivery on failure).

--
        Viktor.

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