Hi all, Due to problems we have been experiencing with auto-probe we have decided to disable passive probing for all of our lists. As per the Site Manager's Operation Manual documentation (p.188) I set: Auto-Delete: Yes,Full-Auto,Probe(0) in the header of all of our lists. However probing seems to be occuring fast and furious as always. At first I thought this might be the delay in probes sent previously and only now being received, but the it has been over a week and the amount of probe failures being received does not seem to be curtailing. Am I missing something? I tried setting: Auto-Delete: No But that resulted in all probe failures being returned to the postmaster address, which was overwhelming. I would test a few different methods, but since we are hosting many large lists, I am afraid to tinker too much without knowing what the results might be. Anyone got any ideas? Thanks for your help. --Michael