3. Mailboxes 2 and 3 moved to the
cloud, Mailbox 2 works Mailbox 3 fails
1. Mailbox 2 is granted Send-As to Mailbox 1
then Mailbox 1 is moved to the cloud
2. Mailbox 3 is granted Send-As to Mailbox 1,
which is now in the cloud
4. Mailbox 4 given full access to Mailbox 1 then
Mailbox 4 moved to on-premises
Changes needed:
1. We need to keep AD Permissions in sync
between premises
Workaround: Assign permissions to both the MBX and
MEU
Add-AdPermissions and Add-RecipientPermissons
Exchange On-Premises
Exchange Online
Mailbox 2
Mailbox 4
Mailbox 1
Mailbox 3
Send-As Permissions
