- Open a MySQL console
Run the following command:
If the printed result is 31485 or higher you will have to clean the database using the kopano-dbadm utility.
Next, run the second command:
This checks the table for duplicates, printing any it finds.
If this returns anything you have duplicate entries in your "names" table that can be cleaned by kopano-dbadm utility.
- If the table contains less than 31485 entries and no duplicates, you can upgrade to 8.5.7 without running into the K-1216 error.