[Dovecot] Sieve vacation attach original message

[Andreas Schulze]

Joseph Tam:

> "azurIt" <azurit at pobox.sk> writes:
>
>> is it, somehow, possible to attach the original message to the vacation
>> autoreply?
>
> Hmm.  Allowing a sender control over both the recipient (via spoofing),
> and the content seems like perfect recipe to turn your mail server into
> a spam relay cannon.

I would like to use such feature too. (build a "ECHO Service")

There where some discussions how to reply the body using sieve some  
months ago.
(http://dovecot.org/list/dovecot/2013-September/092359.html)
But I found no solution fitting my needs.

Andreas