From: "Ben Parker" <[log in to unmask]> Sent: Monday, November 14, 2005 11:34 PM > I think that in most cases (the CHANGE command is a known exception), the > From: address used for the OK-Confirm operation need not match the > address-mailed-to by LISTSERV as long as the cookie code does match. Unfortunately, the Confirm command for subscription renewal doesn't use the OK-Confirm technique. There's no correlator number. > >When a Probe is sent to a nonworking address, the error goes undetected. > > You have mentioned something like this before. This would suggest some > possible problem with your installation that prevents such bounces from > getting back to LISTSERV. If they do get to LISTSERV the bad addresses > will be auto-deleted (assuming you have sensible autodel settings). > > Probe messages (both passive probe and active probe) go out with a > modified Return-Path address: > > Return-Path: <owner-listname*bparker**BESTEFFORT*[log in to unmask]> Aha! this is perhaps the hint I need. I cannot find any Return-Path: header entry on the active probe messages sent to me. Also, I cannot see any on my list email, though I have checked enough that I should (in my test setup) have received a passive probe. I also cannot see any in the non-probe type of renewal notice, although when one of those bounces from a bad address, an error is detected. Maybe these are stripped off by my email interface (Outlook Express). But that seems unlikely, because I can view the full trail of Received: header entries, which are (according to the RFCs) in the same class (Trace) of header fields. You describe known problems with messages coming back via the probe's Return-Path: address. Are there known problems affecting that field outbound? It's possible our site administrator needs to deal with this, but unless I can recite chapter and verse when I report a problem, those guys are amazingly unhelpful. Is there any passive probing on THIS list (LSTOWN-L)? Maybe scanning received messages from a different server will be helpful. Hal Keen