I’m in the midst of getting our email services from on-site Exchange to Google Apps using the Data Migration tool in the Google Apps Management Console. I’ve moved calendars and contacts without error. However, my email migration seems to be a mess. I’ve got the email server and user set up that I used for calendar and contact migration. But now in the migration status screen, the most common messages I see are bouncing around from Error (Retrying) 11001 to Estimating Mailbox size. I’ve had 2 accounts complete since I started the process this morning (5 hours ago).
Troubleshooting did so far:
I know EWS is enabled and I tested the connectivity with the Microsoft Remote Connection tool.
My firewall isn’t spewing messages that it’s blocked connections from Google IPs.
APIs are set to allow email (Read/Write/Send), Email archiving, Email (Insert/Import messages), and Email (Manage labels).
I’ve also double-checked my impersonation rights on the server.
IMAP is enabled on all accounts
The migration speed has been set to anywhere between 100 and 600 in the migration settings.
Does anyone know why this part of the migration would be having issues with connections to the server? Also, would like to know about office 365 cloud migration.