Only the first 100 members are visible. If we want to get more, we have to click Show All and then we get an exception.
A bug in the version 2.x of the module newsletter generates the following exception:
oct. 18, 2016 10:49:14 AM org.jahia.bin.errors.ErrorLoggingFilter logException
INFOS: Authorization required for resource: /
This has been fixed in version 3.x but it is only available for DX 7.1.x.x