[Exim] BCC list at first MTA in chain

Greetings,

I have Exim 3.36 installed on a webserver. It listens on port 2525 and
only ever receives mail from local CGI processes. It has one router
configured and forwards *all* incoming mail (from CGIs) to a smarthost.
The idea is that the CGIs can reliably and quickly get rid of mail to
the exim MTA and then exim can leisurely forward the mails to the
smarthost mail gateway.

My question is; if a mail contains a BCC list with N addresses, will
exim process the list thus firing off N messages to the gateway? As far
as I can figure out from the specs, it seems it will (even *must*) do
so. Is this correct?

If so, is it possible to force exim to pass on the message with the BCC
list intact, thus letting the gateway do the fan-out?

Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored.

This message is for the named person's use only. It may contain
confidential, proprietary or legally privileged information. No
confidentiality or privilege is waived or lost by any mistransmission.
If you receive this message in error, please notify the sender urgently
and then immediately delete the message and any copies of it from your
system. Please also immediately destroy any hardcopies of the message.
You must not, directly or indirectly, use, disclose, distribute, print,
or copy any part of this message if you are not the intended recipient.
The sender's company reserves the right to monitor all e-mail
communications through their networks. Any views expressed in this
message are those of the individual sender, except where the message
states otherwise and the sender is authorised to state them to be the
views of the sender's company.