It’s the small things that make all the difference sometimes.
Microsoft has made, and continues to make huge strides in the Exchange Hybrid Configuration Wizard. What was once a very basic join between two mail organisations – on-premises and Exchange Online, is now getting closer and closer to being a seamless experience.
The only limitation on cross-premises access is currently the Send-As permission, so this still needs careful consideration of the time-table to migrate managers and delegates.
There is one thing which I have been asked a few times when someone has been migrated… “Where have my additional mailboxes gone ?”. In most instances, these will be mailboxes which have been added due to automapping.
Auto-mapping is an Exchange & Exchange Online feature, which automatically opens mailboxes with Full Access permissions in a delegate’s Outlook client.
At present this does not work when a user is migrated to Exchange Online, cue the “Where’s my mailboxes gone”… “you’ve broken Outlook”, and some hastily added additional mailboxes, or a quick migration of the user who is left behind.
Good news…. Automapping of Cross-Premises mailboxes in an Exchange Hybrid is under development by Microsoft… looks like release is imminent too.