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 InterOrg Replication tool (by Microsoft)<br />
<br />
<a href="http://support.microsoft.com/kb/238573/en-us" rel="ugc nofollow">http://support.microsoft.com/kb/238573/en-us</a><br />
<a href="http://support.microsoft.com/kb/238642/" rel="ugc nofollow">http://support.microsoft.com/kb/238642/</a><br />
<a href="http://support.microsoft.com/kb/221767/" rel="ugc nofollow">http://support.microsoft.com/kb/221767/</a><br />
<br />
* I have supported (implemented) &amp;&nbsp;troubleshooted this before. This is the only non-3rd party option if you want to keep 2 separate Exchange Organization &amp;&nbsp;share calendar.<br />
<br />
* For successful implementation kinldy read first KB article carefully &amp;&nbsp;understand it before deployment. <br />

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InterOrg Replication tool (by Microsoft)

http://support.microsoft.com/kb/238573/en-us [http://support.microsoft.com/kb/238573/en-us]
http://support.microsoft.com/kb/238642/ [http://support.microsoft.com/kb/238642/]
http://support.microsoft.com/kb/221767/ [http://support.microsoft.com/kb/221767/]

* I have supported (implemented) & troubleshooted this before. This is the only non-3rd party option if you want to keep 2 separate Exchange Organization & share calendar.

* For successful implementation kinldy read first KB article carefully & understand it before deployment.


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no<br />
<a href="http://technet.microsoft.com/en-us/library/bb124677.aspx" rel="ugc">http://technet.microsoft.com/en-us/library/bb124677.aspx</a>
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no
http://technet.microsoft.com/en-us/library/bb124677.aspx [http://technet.microsoft.com/en-us/library/bb124677.aspx]

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kbitguru: This seems the easiest way for now. A trust is not yet possible (due to a number of reasons.). But they will be integrated in our domain eventually. Thanks for the fast help!
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kbitguru: This seems the easiest way for now. A trust is not yet possible (due to a number of reasons.). But they will be integrated in our domain eventually. Thanks for the fast help!

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You can also allow RPC/HTTP access, if user wishes to see the information in MS Outlook instead of OWA.<br />
<br />
-kbITguru
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You can also allow RPC/HTTP access, if user wishes to see the information in MS Outlook instead of OWA.

-kbITguru

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<div class="content wysiwyg-content">
we recently bought a new firm wich has its own IT infrastructure (domain, exchange, ....). Is there a way to grant one of their users access to the Outlook calandar of one of our users?
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we recently bought a new firm wich has its own IT infrastructure (domain, exchange, ....). Is there a way to grant one of their users access to the Outlook calandar of one of our users?

External Access to Outlook Calandar

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

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.