Category: PowerShell

Exchange federated calendar sharing issue

Last week I started the setup of an Exchange 2010 Hybrid configuration at a customer, to start a pilot with Office 365/ Exchange Online. The Office 365 Hybrid configuration run without any issues. We did some tests like the mail flow, by validating the outbound connector, performed a successful migration of a test mailbox etc. …

Exchange Error: 550 5.1.1 RESOLVER.ADR.ExRecipNotFound

Sometimes you have a reason to restore a mailbox from back-up, because it was deleted by mistake or a former employee is hired again. But after restoring the mailbox, several (internal) users are not able to send email to the restored mailbox and receive an error message like: Delivery has failed to these recipients or …

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