EOP resources for malware prevention

In light of the recent malware news, a couple of my colleagues put together a list of Exchange Online resources. This list is by no means definitive or complete, it is just a place to start when thinking about configuration options in Exchange Online Protection. EOP Best practices: includes how to create rules for extension blocking…

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Find AD Objects with an Incorrect TargetAddress

When you have a hybrid environment setup with Exchange Online, you’ll notice a new Accepted Domain in the Exchange Online portal. <domain>.mail.onmicrosoft.com This domain is used by Exchange on-premises to route mail to a mailbox that has been migrated from Exchange on-premises to Exchange Online. After a mailbox is migrated from Exchange on-premises to Exchange…

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