Trying to setup a Mimecast Sync Engine Application on Prem out the Box comes up with 

“validation failed: invalid mimecast user or insufficient permissions”

This is because by default 2fa is enabled on all Accounts created in Mimecast , you need create a new Authentication Profile and Disable 2fa on this , then assign it to that user group and bind it all together with a Profile

 

Tags: 2fa, mimecast, validation failed: invalid mimecast user or insufficient permissions

Trackback from your site.