The following two errors are very common in the delivery error reports passed back from our LISTSERV server: Your message Subject: Probe failure for SACP-L was not delivered to: [log in to unmask] because: User username ([log in to unmask]) not listed in public Name & Address Book AND Your document: xxx was not User Name/Tidewater/BSHSI delivered to: because: Unable to deliver message to cc:Mail I believe that these are destination configuration problems, but what do owners/site managers do about them? And what is the cause of the second (cc:Mail) problem?