Duplicate e-mails are received from the internet for a user if the mail is addressed to the user in the "To" field and a group's internet address is in the "cc" field, where the user is a member of the group.

I have seen that this problem has been fixed in Domino 8.5.1, but I still have it in Domino 9.0.1 FP3.

 

I thought to have fix it by changing the location settings on the client :

Format for messages addressed to internet addresses --> Notes Rich Text Format

But this problem also occurs now for incoming emails from internet.

 

Does someone have any tip to help me ?