Office 365 Dynamic Distribution Groups Filtered by On-Premise Organization Unit (OU).

I have been asked a number of times if it is possible to create Dynamic Distribution Groups in Office 365 filtered by the On-Premise Organization Unit (OU). I recently discovered a method to achieve this with some collaboration with a couple of colleagues. Essentially we need to create an inbound synchronization rule in AADConnect to…

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Exchange Online Cross Tenant Calendar Free/Busy Availability Information

I was recently asked how to enable cross tenant calendar lookup, for arranging meetings, where two organizations are running their email services in Exchange Online. This happened to be something I had not thought about before, however in a company merger situation this would be an invaluable tool. Fortunately within Exchange Online the building blocks…

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Hybrid Configuration Wizard - DataStrings.InvalidSmtpDomainName(domain) error connecting to On-Premise Exchange

I recently ran into an issue with a customer who was running the new Hybrid Configuration Wizard (https://aka.ms/taphcw), where the tool was unable to connect to the Exchange On-Premise environment, with the error DataStrings.InvalidSmtpDomainName(domain). The underlining cause was configuration data remaining from a decommissioned Exchange server, within the Exchange configuration in Active Directory. Once this configuration was…

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