While migrating from On-premises Exchange 2013 to O-365 through IMAP it is giving error after syncing approx. 200 mails "Delay response from source server".

Workaround :

1. Check IMAP endpoints and found ok.

2. If we did migration from individual mail user id password in a batch then its working perfectly. But while I did the migration from a common user ID and password then its giving error.

Waiting for reply....

Thanks & regards

• Moved by Jason Johnston [MSFT]Microsoft employee 13 hours 44 minutes ago Not a development question.