My current customer had a little dabble in Office 365, they set up their Hybrid configuration and added their @xxx.onmicrosoft.com email alias to all their users and groups. This mostly happens automatically.<\/p>\n
They then later decided to go with a new, different Office 365 tenant for production purposes, the old tenant was dismantled and the AADConnect server was deleted.<\/p>\n
However, all AD objects still had their alias for the old Office 365 tenant, syncing that to the new tenant would be a bad idea and I cleaned that up just to be sure it wouldn’t cause trouble in the future, here’s how I did that:<\/p>\n
cleanupAllADObjectProxyAddresses.ps1<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" My current customer had a little dabble in Office 365, they set up their Hybrid configuration and added their @xxx.onmicrosoft.com email alias to all their users and groups. This mostly happens automatically. They then later decided to go with a new, different Office 365 tenant for production purposes, the old tenant was dismantled and the … Continue reading Removing .onmicrosoft.com and .mail.onmicrosoft.com aliases from all groups, users and contacts in your Active Directory<\/span>