This is an enhancement request, or least a call for discussion of an enhancement request concerning PROBE. One of my list readers recently was probed and LISTSERV reported a "probe failure". It turns out he was away from his office mailbox and had a "vacation program" auto-responding. Because LISTSERV saw a response from the PROBE, it was treated as a delivery problem. My subscriber suggests ... "NOTE: The message ... which generated the something-is-wrong message from listserv is ... a standard unix vacation mail program, which DOES attempt to detect mailing lists -- by checking for precedence bulk or junk. If you have any way to change how the "probe" mail is sent, to use precedence junk or bulk, that would probably be a very good thing to do." Any thoughts on how to proceed? cheers, Wayne T. Smith mailto:[log in to unmask] Systems Group - UNET (formerly CAPS) University of Maine System