We use IMail's native listserv capabilities extensively, and 99% of the addresses in our lists are internal addresses. We are a single-domain server environment. Over the last few weeks I've noticed intermittent delivery failures, and I'll get postmaster notifications of "Invalid User: [EMAIL PROTECTED]" attempts. Not the same list, not the same users, not very often. Nothing obvious in the log files. But I got a notification this morning showing a failure to deliver a list message to MY OWN ADDRESS. Offends my very honor. Anyone had any experience with this particular problem? We're using plain old Imail Mail Server, version 2006.1, and we've used some of these same lists [seemingly without problems] going back to 1997, so I'm mystified. Thanks, John S
