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From: Victor Duchovni (Victor.Duchovnimorganstanley.com)
Date: Thu Nov 18 2010 - 18:06:09 CST
On Thu, Nov 18, 2010 at 07:02:17PM -0500, Wietse Venema wrote:
> You may be surprised to learn that defer_transports is implemented
> by sending mail to the retry(8) delivery agent (Postfix 2.4 and
> later). If you specify retry: in a transport map then it will have
> the same effect.
> This also means that the defer_transports feature is now redundant.
Well, it is a lot easier to list some transports there, than
to change all the entries in the transport table, so the
redundancy is helpful in many cases.