Is anyone aware of an interdependence between the Mail-via and ack options in a list setup. I recently changed my lists to "ack Yes" because users complained that they weren't getting enough feedback from the server to know if their contributions had been processed -- "ack Yes" helped. However, Mail-via Distribute was then specified for one of these lists and it seems that listserv is no longer sending the little statistics file resulting from "ack Yes". Thank you for your help.