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Exchange 2007 and Cisco PIX 515e TLS Question

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    Hi, everyone!

    I have a question about Exchange 2007 TLS Secure connections.

    I have Edge Server in Cisco PIX 515e (Pix OS v 7.x) DMZ network, and Hub Transport Server INSIDE.

    When esmtp inspect enabled on PIX, TLS connections works incorrectly, because esmtp inspect strips out any non-esmtp commands.

    Disabling esmtp inspect maybe a solution, but this is opens to everyone, who is OUTSIDE, server banner, commands supported, etc – and in my opinion this is no good because of less security.

    Will you recommend to leave all things as is, or maybe possible change of Hub-Edge Servers authorization methods?

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