http://blogs.technet.com/jeffa36/archive/2008/09/23/exchange-hosted-services-at-microsoft.aspx&#160; At Microsoft we have challenges around messaging protection just like other organisations. But unlike other organizations we are the target of many more advanced attacks from outside the company.&#160; So our internal IT department was lookingen-AUCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/jeffa36/archive/2008/09/23/exchange-hosted-services-at-microsoft.aspx#3127376Tue, 23 Sep 2008 21:35:09 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3127376Michael Dragone<p>I would be interested in hearing how you handle the authentication and mail flow between the four different internal Exchange Organizations and also why you continue to use the Edge Transport role alongside EHS.</p> http://blogs.technet.com/jeffa36/archive/2008/09/23/exchange-hosted-services-at-microsoft.aspx#3127681Wed, 24 Sep 2008 13:46:34 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3127681jeffa36<p>Hi Michael,</p> <p>I spoke to our local IT folks and this is what they had to say.</p> <p>&quot;It’s primarily to do with us needing to run both in our enterprise so we can give customers real world feedback on how to run either in their environment. &nbsp;It’s nothing to do with us feeling we need both to have proper protection. &nbsp;Either one is perfectly affective for filtering spam and virus’ stand alone&quot;.</p> <p>Does that make sense?</p> http://blogs.technet.com/jeffa36/archive/2008/09/23/exchange-hosted-services-at-microsoft.aspx#3127899Wed, 24 Sep 2008 22:46:54 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3127899Michael Dragone<p>Sure does. I had a feeling that was the reason. :)</p>