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I've created a "spam crawler" account with full access to all mailboxes in an Exchange 2013 environment to get messages in the junk folder to feed the Bayesian filtering running on SpamAssassin in a Linux Anti-spam machine.

This account does not have a mailbox, but have permissions to access other mailboxes. So to get things more secure I would like to restrict connections with this account only from the Linux machine.

I was not able to find this kind of restriction.


PS: If would be possible to modify the Full Access mode, this should be better. I just need to download the Spam messages, so reading permissions is sufficient.

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