Here is my project:

I work for a Mail Institution (I mean, a postal company). Soon, we'll have
to bulk Email S/Mime messages all around the country. These messages will
include sensitive informations (billing, Local Exchange Info,...) These
part of the project seems nearly finished ; we've done this using OpenSSL
& PERL.

Now, we have to find a strong & flexible MUA. Why not PostFix? ;-)

The Internet Service Provider will bring us with 8 routable IP addresses
to do the project.

Our customer (the one who need bulk-sending) could be AZERTY and QWERTY
companies. The <from:> field is entirely spoofed (ie: billingazerty.net)
, the <to:> field will depend on a MySQL database. Using the Mime-Lite PERL
librairy, everything should be ok.

The Postfix server will just have to send these spoofed authenticated messages.
This server will be located into the "inside" local area network, NAT in
front using a Cisco PIX firewall.

The Emails will be composed using a cluster of RedHat 7.3 servers (www.openmosix)
located into the same LAN. Once the message will be done, the Perl script
sends the message into PostFix. Once into PostFix, the queue-managing should
do the tricks, sending it in function of a timing.

Thus, How do I configure PostFix to receive these secured messages & how
do I configure PostFix with easy queue managing? PostFix server will have
to be as discrete as possible! We don't need end-customer having the opportunity
to edit header and see postfix.post.country but just an IP address...

I hope I've been enough clear. Please, help me asking me questions and point
me to URL,

With best regards,

NDV

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