I have several list owners complaining that they are unable to send messages to their lists if they include an attachment to the message but a message without an attachment seems to work just fine. I'm running Listserv 1.8d on an NT server. Does anyone have any suggestions. I don't think it has anything to do with the list header but here is an example of one: Backup check list Subscription= Open,Confirm Ack= yes Confidential= Service Validate= No Reply-to= Sender,Respect Review= Owners Send= Private,Hold,Confirm Editor= [log in to unmask] Moderator= All,[log in to unmask], [log in to unmask] Errors-To= Owner Owner= [log in to unmask] Notebook= yes Notebook= e:\listserv\archives\BACKGROUNDCHECKDSHS Notebook= Monthly,Private Any suggestions would be helpful. Thanks Richard