I'm trying to follow https://www.veritas.com/support/en_US/article.TECH50256 to remove a redundent Exchange server however the query in Step 1 returns a large number of 'old' mailboxes.
The mailboxes are leavers, migrated accounts etc.. and there are many thousands of them.
Is there a recommended way of removing them? Can I leave them in place and follow the remainder fo the article?
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