I will say that 1.8d seems to do a much better job of auto-deletion than 1.8c ever did. Having said that I will point out that sometimes, in addition the reasons mentioned, the errors are for an "auto-forward" address (if I had a dollar for every one of those where the person entered the address wrong ...). Sometimes those can be figured out by close comparison of userids and domains, but sometimes not. I have been known to turn off Auto-delete so I will get the errors myself. Sometimes takes me awhile, but I have yet to encounter one I couldn't track to the responsible sub. Auto-Delete will, of course, never delete an address which has never been subscribed. That's why Eric created listowners, to do the dirty work. Douglas