Hi, Wieste,
Thanks for reply.

From: Wietse Venema <wie...@porcupine.org>
Subject: Re: SRS implementation
Date: Fri, 21 May 2010 16:13:45 -0400 (EDT)

> First, this would accept mail for forwarder+anyuser=anydom...@my.dom,
> meaning that it would be an open relay. A more secure implementation
> would compute a hash of (orig_sen...@domain.com, local secret) and
> include that hash in the return address.

I guess, with my patch alone, could not cause open relay, but ...
when someone implement the functions for bounce or DSN to the
anyu...@anydomain address derived from that SRS'ed sender
unconditionally, this would be the case, isn't it ?
Or, something else I could missed here (as usual ;-p).

> Second, Postfix has a plugin interface that supports implementations
> SRS, SPF, DKIM, SenderID, etc.  I currently have no plans to build
> these into Postfix.

OK, I'd like to consider these lines too.

Thanks,
---
Tomo.

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