Today, we’ll talk about Migration rate occurs when you try to migrate an onprem mailbox to Office 365:
Error: MigrationPermanentException: The target mailbox doesn’t have an SMTP proxy matching ’tenantname.mail.onmicrosoft.com’. –> The target mailbox doesn’t have an SMTP proxy matching ’tenantname.mail.onmicrosoft.com’.
So, you’ll see the follow images….
Go to mail flow, email address policies and you need include the new domain or domains ;
You need to add the domain, clicking in plus
You need apply the changes clickin apply;
Try again migrate the account to Office 365;