OWA 500 Error after login

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    TerryLHines
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    #110767

    For the last 6 months I have enjoyed the near flawless operation of my OWA Server. Monday that ceased, following a power failure in our data center OWA is no longer able to communicate with Exchange.
    Current configuration
    NETDIAG passed tests
    owa front end server


    PIX|
    Exchange backend server


    |

    Static ip addresses with the correct addresses and DNS server.

    The SA will not start on OWA

    Getting a DS error

    Event Type: Error
    Event Source: MSExchangeDSAccess
    Event Category: Topology
    Event ID: 2114
    Date: 2/8/2006
    Time: 3:39:36 PM
    User: N/A
    Computer: Exchange
    Description:
    Process EXMGMT.EXE (PID=1264). Topology Discovery failed, error 0x8007077f.

    I have reconfigured IIS and Exchange authentication based on Article ID:327843

    I am able to telnet to the prescribed ports
    For Exchange Communication:
    o Port 80 for HTTP
    o Port 691 for Link State Algorithm routing protocol
    * For Active Directory communication:
    o Port 389 for LDAP (TCP and UDP)
    o Port 3268 for Global Catalog Server LDAP (TCP)
    o Port 88 for Kerberos Authentication (TCP and UDP)

    Any Suggestions.
    TIA

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