I want to remove the default retention policy that comes with every horde Exchange organizations Office365 data file after couple of years. I'm trying to change the default policy of MRM (default retention policy) for my association as a whole did not apply the rules in general, only some specific elements of spam, sent and deleted items. So how I can change the policy of my business as a default set of MRM to eliminate movement of 2 to file, and assign the default retention policy to all mailboxes (including any fresh mailboxes I may create in the future)?
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