New answers tagged exchange
Please make sure the below steps are performed. You will need to have Exchange 2013 in your environment. You will also need to install Exchange 2013 Web Services Managed API 2.0 Establish an OAuth trust on the Exchange Server read more about the pre-req on this technet. http://technet.microsoft.com/en-us/library/jj554516.aspx
Try using the sharepoint 2010 workflow engine. I have been seeing errors in relation to this behaviour and it was identified that the error is that it cannot find the email address. Still investigating with MS Support. However we found that using the 2010 workflow engine it seems to work fine.
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