Auto assignment of contact to accounts does not work

Hello,

One of the nice features of the new version should be:

Auto-assignment of contacts to accounts based on email domain
- Option to automatically associate a new contact to an already present account based on the email domain of the contact when the contact sends a mail for the first time.
- Option to add new accounts based on the email domain of the contact
- Option to enable/disable this feature.
- Option to exclude common domains from the list.

I have updated all accounts with the correct Domain names, but is seems like the new contacts are not getting assigned to the correct account using those domains. Did I miss some sort of setting which activates this auto-assingment, since it does not seem to work?

Kind regards