Use Hashtables to Audit Proxy Addresses Prior to Exchange Online Migration

I’ve recently had a customer ask me if there was a way we could get an idea of what recipient domains within their organization are being used as proxy addresses on their mailboxes in Exchange. Determining recipient domains that were in use was critical to this customer, as they would not be able to migrate…

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“You can’t access this application” when trying to connect with Exchange Online mailbox through ActiveSync

I’ve recently had a customer experience an issue with connecting to Exchange Online via ActiveSync (iOS Accounts, per Azure) for users who are leveraging Modern Authentication. The user tries to login per usual processes, but is greeted with the following error after entering their password in the MA prompt:     Selecting “Return to the…

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