The Crossware Mail Signature service is showing we are processing emails for more users than your subscribed number.
This can occur for a few reasons:
1. You have increased the number of users requiring email signatures
Resolution: Purchase subscriptions for the additional users
2. You are sending more users to the Crossware Service than you have subscriptions for and the additional users do not require a signature.
Resolution: Update your Transport Rule in Microsoft Office 365 Admin Centre so it is using a group that only contains users that require a Crossware Mail Signature Subscription
Check the group configured for Mail signature service only includes users requiring a signature.
1. Go to Microsoft Office 365 Admin
2. Check the group in the Transport Rule - ensure this group only contains users that have a Crossware Mail Signature Subscription.
If you have users/shared mailboxes in this group that don’t need a signature create a specific group for Crossware service and move these users to another group.
Then apply the "CrosswareMSTransportRule" to this specific Group or Groups.