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The KB you found will do the job but to secure the communications over internet, you have to set up an VPN connection between the two organisations.
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The KB you found will do the job but to secure the communications over internet, you have to set up an VPN connection between the two organisations.

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What type of data is there going back &amp;&nbsp;forth?
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What type of data is there going back & forth?

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We acquired a company that is on the other side of the globe - they have their own Exchange server/network etc &amp;&nbsp;there is not a plan to integrate the two at this time. &nbsp;That said, since we have a lot of meetings between us, it makes it really hard to plan. &nbsp;Is there a way to share, across the internet (securely), free/busy information? &nbsp;I saw <a href="http://support.microsoft.com/?id=238573" rel="ugc">http://support.microsoft.com/?id=238573</a>, but I am not sure how that would work across the internet securely. &nbsp;<br />
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What do various organizations do?
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We acquired a company that is on the other side of the globe - they have their own Exchange server/network etc & there is not a plan to integrate the two at this time.  That said, since we have a lot of meetings between us, it makes it really hard to plan.  Is there a way to share, across the internet (securely), free/busy information?  I saw http://support.microsoft.com/?id=238573, but I am not sure how that would work across the internet securely.  

What do various organizations do?

Share Free/Busy information between two Exchange servers

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.