Nat in failover works only when the WAN1 is up

[__Fox__]

Hi, I've got a PFSense 1.2.3 release with 1 LAN and 2 WAN
WAN1 is a PPPoE with a static IP
WAN2 is an ADSL with a cisco router (wan2 is 10.0.0.10, cisco LAN il 10.0.0.1, cisco wan have the static ip and all the ports are natted to 10.0.0.10)
LAN1 is 192.168.1.x

I've got 2 failover pools
WAN1 to WAN2
WAN2 to WAN1

I've got the same nat both on WAN1 and WAN2 that goes to a server in the internal network
(for example port 25 both from wan1 and from wan2 point to 192.168.1.100)

All works fine if WAN1 is UP.

I can go out from wan1 or from wan2 without problem, i can came in to port 25 trought both the pubblic ip address of WAN1 and WAN2.

The problem is that when WAN1 goes offline ("disconnected".. is a pppoe). the internal pcs correctly goes on internet trought WAN2, but the WAN2 nat, that works fine until the WAN1 was UP, doesn't work anymore!

Do you have any suggestion?

Thanks

[__Fox__]

nobody have any suggestion?

new test:
Wan1 (PPPoE) off, try to telnet from outside to port 25 on WAN2 IP. The correct rule is trigged:
The rule that triggered this action is:
@94 pass in log quick on bge0 reply-to (bge0 10.10.10.1) inet proto tcp from any to 192.168.1.7 port=smtp flag S/SA keep state label "USER_RULE:NAT SMTP FROM WAN2"
but the packet don't pass…
same test with WAN1 ON, the same rule is trigged and the packet correctly pass..

Thanks