Hello Everyone,
So I did my migration to Office 365 successfully, all my mailboxes were synced and I updated all my DNS records (MX and autodiscover along with other O365 records for SIP)
Emails seem to work fine.
However, as recommended on a post I found here, I kept my migration batch running up to 72 hours after my MX was changed (so my mailboxes are still synced in case old emails go to the old exchange).
It's been around 48 hours I've changed it as of now, so theoretically I still need to sync mailboxes but when I try to resume my batch to redo it, I got "Incremetal Failed" status on each mailbox with an error message as follow:
Error: MigrationPermanentException: Error: MapiExceptionTimeout: Unable to make connection to the server. (hr=0x80040401, ec=-2147220479)
Could someone help me on this ?
Thanks a lot.