PIX with 6 interfaces problem

Hi i have a PIX 515 E Unrestricted with 6 Interfaces. This is the network diagram:

                                   OUTSIDE (connected to an HDSL Router)
                                           |
                                         PIX --DMZ1
                                         PIX --DMZ2 --ADSL Gateway with a public IP
                                           |
                                         LAN (192.168..x.0)

well as you can see i have list only 2 interfaces of the six i have...
on the PIX i have setted as default gateway the ip of the HDSL router connected on the Outside.
The question is how can i use the ADSL gateway from the LAN?
i'll explain better:
i'd like to use the HDSL placed on the OUTSIDE only for MAil services on the DMZ1 ..IMAP,SMTP, and the ADSL placed on the DMZ2 for Internet browsing of the client on the LAN.....HTTP,FTP...etc
is possible to do that?
Thank you

acivitaAsked:
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billwhartonConnect With a Mentor Commented:
No, it's not possible to use the PIX to route to the Internet via two interfaces.

You would only be able to place one default gateway command like this:
route outside 0 0 <gateway ip> OR
route dmz2 0 0 <gateway ip>

If you have two ADSL routers and want to load balance, you would need to use a router to which both the ADSL modems connect to and the PIX would connect to this router. Check this doc:
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_qanda_item09186a0080094874.shtml#Q18

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