Delegate access with Exchange Server ActiveSync (EAS)

I see questions and issues coming up about delegate access with EAS/ActiveSync quite often.  If you are dealing with an issue with ActiveSync doing delegate access, then you need to understand that EAS was not designed nor tested for doing delegate access.  Because of this it is not supported.  There are some who have devices…

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About: Exchange Server ActiveSync (EAS)

API Type:  Mailbox Assessor API Interface: APIs which can send a POST. Business Logic: Works with  mailbox and public folder content including items, folders and special settings. Development Languages: N/A. Property Access: Yes Product Versions: Exchange 2003, 2007, 2010, 2013, Exchange Online. Summary: Exchange Server ActiveSync (EAS) is a very light fixed schema API which…

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Best Practices - EWS Authentication and Access Issues

Authentication and access to a mailbox is an often misunderstood area.  I’m going to cover Authentication and type of access (impersonation vs delegate access vs direct access) and common problems developers run into in this article. Authentication vs Authorization. Lets start from the beginning with some basic information on authentication and authorization,  The first thing…

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EWS calls can do impersonation and delegation... how about REST?

This is an area where what EWS can do some things the REST API can do.  At this time the REST API does not support impersonation, delegation or Basic Authentication with Exchange.  Its possible that this may change in the future; however, for now those are not supported.  If you need those capabilities then look…

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The importance of EWS Impersonation while using an application account.

Developers of applications which require access to user mailboxes often struggle with the choice between the Impersonation and Delegation access methods. While both provide programmatic rights to mailbox objects, they are designed to meet rather different needs, and for situations where a single account needs to access multiple mailboxes, Impersonation is the better choice. This…

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HOWTO: VB - Reading Delegates WebDAV Sample

Private Sub Command1_Click()    ‘=====================================================    ‘DoXML takes the href to a document    ‘and returns the MAPI PR_ENTRYID property expressed in    ‘a hexadecimal string format such as is used by CDO 1.21    ‘Function DoXML(strHref)    Dim objX    Dim objXMLdoc    Dim objNode    Dim strR As String    Dim retXML As String        Dim parseStringtemp As String    Dim parseString As String   …

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