How do I avoid duplicate messages to users when sending to an umbrella list? I've made announcement lists for different computational resources we have at our site. My intention is that the users should subscribe to the list that match the resource he/she is using. Moreover, I have an umbrella list which has every resource maillist as a subscriber. If I now send a general announcement to the umbrella list, a user that has subscribed to several maillists get one message for each list. This is not very nice. Since all list are maintained in one single mail/www host, there should be a possiblility of joining all users before sending the message, avoiding sending duplicate messages to a user. Earlier, when I used majordomo, it was easy to construct a mailalias that contained all lists and let sendmail remove the duplicate e-mail addresses. Is there any possibility to do a similar thing in mailman? Niclas [EMAIL PROTECTED] ------------------------------------------------------ Mailman-Users maillist - [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/mailman-users