Meeting request sent to person outside of our network show None for the Response after they accept the invitation and send a response

Posted on 2011-10-15
Last Modified: 2012-05-12
My customer has a SBS 2011 network.  I used Microsoft Exchange 2010 ECM to create a Room Resource.  Example conference room.  To test it I opened my Outlook 2010 and created a Meeting Request.  I invited the Conference Room (, my account inside the company ( and my account at my office (  I accepted the meeting request and sent a response at my inside and outside email address.  I received all the requests back in my inbox as accepted.  When I go into the meeting request and click Tracking, it show that the Conference Room and my inside account Accepted the meeting.  My outside account still shows the response as None.  

I went into the ECM and changed turned on “Enable the resource booking attendant” in the properties of the Conference Room and tried it again and it still does not work.  I am not sure if I need to turn something else on in the properties of the Room Resource or what.

Question by:ditobot
    LVL 9

    Accepted Solution

    You also need to adjust the Message Delivery Options for the resource to make sure it does not require authentication to accept messages (as external contacts will not be authenticated) and make sure the calendar in question is set to process requests from external contacts..

    Hope this helps!

    Author Comment

    not sure if i am in the right place, i found accept messages under the Mail Flow settings tab and the Message Delivery Restrictions.  The Require that all senders are authenticated was already unchecked.  

    Where would i find the setting for process requests from external contacts?


    Author Comment

    LVL 9

    Assisted Solution

    Sorry was on the road -- that setting would be done on the individual mailbox that would receive the external communications ExchangeSnip

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