Security Essentials Data Inventory - Email req not recognizing Mimecast

[BrendanCO]

Hi all! I'm trying to get Security Essentials to recognize Mimecast for it's Email requirement under Data Inventory. It does not recognize it and only gives onboarding info on O365. 

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I've got Mimecast for Splunk installed and all the dashboards show up. I've updated the "Email" data model to include the index "mimecast". It is accelerated and contains data. 

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The CIM Usage Dashboard shows data in the Email data model, populates the dataset field and shows results. 

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The SA_CIM_Validator also recognizes the Email datamodel as having the Mimecast data. 

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SO 🙂 What am I missing, folks? Much appreciate any thoughts, ideas you can share.