VIP to VIP SMTP - Help Please

  • Been using PFSENSE for a couple of years now, love CARP, love VIPs, works great - even have it deployed in a datacenter environment for a bunch of hosted customers.

    But here is the problem I am having. I have 2 different VIPs to NAT out 2 different hosted exchange customers.

    I have SMTP ports forwarded back into each exchange server from their respective VIPs and they're NATd out correctly and mail works everywhere.

    EXCEPT for too eachother, for some reason I cannot send mail from 1 exchange server out it's VIP then back in the other VIP to the other.

    It doesn't even hit the firewall, I logged the traffic and I'm not even seeing it hit either interface.

    Any got any ideas?  :-[

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