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Prior to that Entourage used WebDAV, which was deprecated in Exchange Server 2007 and removed entirely starting with Exchange Server 2010.

Entourage is the oldest of these, with the Web Services Edition released in 2008 to allow connectivity to Exchange Server 2007 using EWS. There are two separate Mac clients that use Exchange Web Services for connecting to Exchange Online Entourage and Mac Outlook. These applications are controlled with different EWS settings which are discussed next. PS C : > Set - OrganizationConfig - EwsApplicationAccessPolicy EnforceAllowListĮnforcing a block or allow list for EWS has no impact on the Entourage, Outlook for Mac, or Microsoft Outlook applications.

First, set the EWSApplicationAccessPolicy to enforce the block list. The EWS application access policy can be configured on a per-mailbox basis, or configured for the entire organization.Ĭontinuing with the example of LinkedIn, to block EWS access by the LinkedIn user agent for the entire organization there are two steps required that use the Set-OrganizationConfig cmdlet. Fortunately, we can be selective in what we block or allow for EWS by configuring an EWS application access policy. The connection from LinkedIn made use of Exchange Web Services and highlighted the need to monitor and control EWS access to Exchange on-premises and Exchange Online.ĭisabling the entire EWS protocol because of one unapproved example of application access would deny your organization the many good things that EWS allows. LinkedIn would then connect to the person’s corporate email account and scrape it for email addresses to suggest them as potential contacts that should be invited to connect on LinkedIn. In June of 2013 LinkedIn was found to have implemented a feature that invited users to enter their corporate email credentials on the LinkedIn website.