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Duplicate SMTP address RRS feed

  • Question

  • Hi,


    In our Exchange 2007 environment, we have disabled a user account for someone that has left, and want to remove their SMTP addresses via the Exchange Managent GUI, however we get this error:

    "The proxy address 'MBX:0' is already being used by ...." Please choose another proxy address.

    Any idea's on why this is happening and what can be done to resolve it?

    Friday, October 14, 2011 3:24 AM

Answers

  • On Fri, 14 Oct 2011 03:24:45 +0000, RhodanZ wrote:
     
    >
    >
    >Hi,
    >
    >In our Exchange 2007 environment, we have disabled a user account for someone that has left, and want to remove their SMTP addresses via the Exchange Managent GUI, however we get this error:
    >
    >"The proxy address 'MBX:0' is already being used by ...." Please choose another proxy address.
    >
    >Any idea's on why this is happening and what can be done to resolve it?
     
    Duplicate proxy addresses can be introduced through LDIFDE imports, or
    through ADSI or LDAP APIs in scripts or programs, or direct
    manipulation by ADSIEDIT.
     
    I don't know what 3rd-party software might use the address type "MBX",
    though -- unless it's from Exchange releases earlier than 2000
    (http://support.microsoft.com/default.aspx?scid=kb;en-us;263460). The
    MBClean software from the Back Office Resource Kit (now there's a
    throwback!), for one, used that address type.
     
    I don't think that address type is used by anything else (but I don't
    know that for a fact!). If it isn't, they you might consider tuning
    admodify and removing all proxy addresses of that type from your AD.
    My guess is that the MBX address type was a leftover from some earlier
    migration.
     
    ---
    Rich Matheisen
    MCSE+I, Exchange MVP
     

    --- Rich Matheisen MCSE+I, Exchange MVP
    • Proposed as answer by Jackzhou_5 Monday, October 17, 2011 2:46 AM
    • Marked as answer by Xiu Zhang Friday, October 21, 2011 9:20 AM
    Friday, October 14, 2011 9:27 PM

All replies

  • Delete that MBX:0 smtp address. 
    [string](0..33|%{[char][int](46+("686552495351636652556262185355647068516270555358646562655775 0645570").substring(($_*2),2))})-replace " "
    Friday, October 14, 2011 3:58 AM
  • Run the below query in ADSIEdit to find out which user has this MBX:0 proxy address and then remove it.

    Root of Search: yourdomain.com
    Query String: (proxyAddresses=smtp:MBX:0)
    Query Scope: Subtree search


    Jasjit Singh Dhindsa | ITIL v3 | IASA Foundation Certified | MCITP:Exchange 2010 | Exchange 2007 | MCTS:OCS 2007 | Exchange 2010 | Exchange 2007 | MCSA:Messaging | Security | MCSE:Messaging | Security | MCP
    Friday, October 14, 2011 5:10 AM
  • On Fri, 14 Oct 2011 03:24:45 +0000, RhodanZ wrote:
     
    >
    >
    >Hi,
    >
    >In our Exchange 2007 environment, we have disabled a user account for someone that has left, and want to remove their SMTP addresses via the Exchange Managent GUI, however we get this error:
    >
    >"The proxy address 'MBX:0' is already being used by ...." Please choose another proxy address.
    >
    >Any idea's on why this is happening and what can be done to resolve it?
     
    Duplicate proxy addresses can be introduced through LDIFDE imports, or
    through ADSI or LDAP APIs in scripts or programs, or direct
    manipulation by ADSIEDIT.
     
    I don't know what 3rd-party software might use the address type "MBX",
    though -- unless it's from Exchange releases earlier than 2000
    (http://support.microsoft.com/default.aspx?scid=kb;en-us;263460). The
    MBClean software from the Back Office Resource Kit (now there's a
    throwback!), for one, used that address type.
     
    I don't think that address type is used by anything else (but I don't
    know that for a fact!). If it isn't, they you might consider tuning
    admodify and removing all proxy addresses of that type from your AD.
    My guess is that the MBX address type was a leftover from some earlier
    migration.
     
    ---
    Rich Matheisen
    MCSE+I, Exchange MVP
     

    --- Rich Matheisen MCSE+I, Exchange MVP
    • Proposed as answer by Jackzhou_5 Monday, October 17, 2011 2:46 AM
    • Marked as answer by Xiu Zhang Friday, October 21, 2011 9:20 AM
    Friday, October 14, 2011 9:27 PM
  • On Fri, 14 Oct 2011 03:58:55 +0000, mjolinor wrote:
     
    >Delete that MBX:0 smtp address.
     
    It's not a SMTP address, it's a MBX address type. ;-)
     
    ---
    Rich Matheisen
    MCSE+I, Exchange MVP
     

    --- Rich Matheisen MCSE+I, Exchange MVP
    Friday, October 14, 2011 9:28 PM
  • May be this can help you.

    http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_25117614.html

    --------
    Saif Khan

     

     

     

     

     


    Regards Saif Khan Microsoft Certified Technical Specialist
    Sunday, October 16, 2011 9:33 AM