We are planning to perform email migration for one of our clients domains, from our Smartermail server to Office 365.
I've tried starting the migration using data migration tools in Office 365 but the speed of migration is low, under 3 Mbps.
Is there any kind of throttling enabled in Smartermail server? How to turn it off?
Migration is done using IMAP, SSL on port 993.
Regards,
Drazen