The situation with MVS systems is very similar to that of VM systems not running a mailer and RiceMail or equivalent. You have a thing that comes with TSO (or TSO/E or whatever) which generates a certain type of notes, in Netdata-note format. This thing (sorry I don't know the name, I know it only from notes I got) does work with LISTSERV. Then you have about 200 flavours of locally-written or locally-modified or vendor-supplied mail systems which all do things differently, much like locally-enhanced NOTE EXEC's on VM. These generally don't work. Files from an MVS system not running UCLA-mail or the like generally show up as 'userid OUTPUT' from SYSTEM@nodeid (or #@nodeid, or something similar). I have seen all imaginable classes, although A is the most common. If there are Netdata headers, LISTSERV can get a rather good idea of what the thing is (mail or file), but if it comes in PUNCH format it usually ends up treating it as a file. If you generate RFC822 headers and can set the NJE filetype to MAIL, your problem will be solved. Eric