Your mail to 'fijnstofmeters@lists.hack42.nl' with the subject fijnstofmeters@lists.hack42.nl post from fijnstofmeters-bounces@lists.hack42.nl requires approval Is being held until the list moderator can review it for approval. The message is being held because: Message has implicit destination Either the message will get posted to the list, or you will receive notification of the moderator's decision.