Hello,

I have been trying to work on this for a while. I am trying to get our domain based email from a third party using smartermail hosting into a new Google Workspace account. I have been using the google import tool (formerly the data migration tool). I have confirmed the login credentials and incoming server for each email but I get an error when I run the tool. The error is the same for all 7 accounts: 

An error occurred while calling source system. Code: 13. Cause : INTERNAL, Message: Internal sync error. 

I have tried following Google support tickets, but nothing has worked so far. I am not sure if I am missing something, or if some setting needs to be adjusted on the smartermail admin side. Anyone have any insight on how to resolve this?

Thanks,