Hi cf090,
Thank you for your question.
1) List settings and configurations for both the cloud and on-premise mailboxes? or is it just a management tool for the on-premise server, and then presumably there is a different tool for the 365 mailboxes?
A: EAC will list all setting and configuration for both cloud and on-premise mailbox. We could refer to the following link:
http://blogs.technet.com/b/exchange/archive/2012/09/20/the-cloud-on-your-terms-part-ii-managing-hybrid.aspx
2) is there any easy way to export all the relevant configurations you can see in the exchange admin console out to say a XLSX spreadsheet in a single go? For audit/configuration management purposes.
A: The configuration of Exchange is stored in the domain. You don't save the configuration of Exchange on its own. we suggest we export to CSV instead of XLSX,We could export/import to CSV file,
we could download this tool from the following link:
http://www.csvviewer.com/
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If there are any questions regarding this issue, please be free to let me know.
Best Regard,
Jim