In our company we have multiple service management projects. Each of those projects has a generic email address to be used for sending bug reports from any user of our tools. Therefore we want, that any user can send an email, even if they are not yet registered as a customer in our jira instance. In order to achieve that I have to enable the option 'Anyone allowed on the customer access settings' under 'Customer Permissions'.
The problem now is, that these customers can see all portals in our jira instance.
The only way I know to avoid this is to enable the setting 'Customers added to this service project only by agents and admins'. But this setting will disable the possibility to create new issues by email from any not registered user.
Is there any other way?