Email not sent for activation new user and trust a new device.

Andrea_Tagetik

we have a strange problem on our teamviewer license and user pool.

A specific user does not receive the email (even in spam) that allows him to trust the device and use the service.

Other users receive regular notifications and are under the same domain, the user's email is regularly active.

We have whitelisted

accountactivation-noreply@teamviewer.com

And

SignIn-noreply@teamviewer.com

but no success, any suggestions?