Identifying Mailboxes without a Cloud Alias

In a hybrid Exchange scenario, mailboxes should be stamped with aliases that are mapped to the tenant unique namespaces (e.g. *.onmicrosoft.com).  If a mailbox does not contain these aliases, it will fail to migrate.  These aliases are normally applied via Email Address Policies, but if the AD object is set to block Email Address Policies from applying, this won’t work.  A quick trick to identify these aliases is as follows (from the Exchange Management Shell, on-premise):
$Mailboxes = Get-Mailbox -ResultSize Unlimited -Filter {EmailAddressPolicyEnabled -eq $False -and EmailAddresses -NotLike "*.onmicrosoft.com"}
Let me know if this works for you in the comments.  Thanks!

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s