Tips archive 26 Dec 2007 dabase.com → Kai's Tech Tips → Debian → maildrop: Unable to open mailbox. maildrop: Unable to open mailbox. Published 26 Dec 2007 Use: maildirmake Debug maildrop and your mailfilter with a command like: maildrop -V2 < amail ← Majordomo how to remove a user LVM2 →