If you cant preview or release messages from the baruwa GUI, and allways get an error message saying "Failed: Message not found in the quarantine" in the logs, you might have one of the following problems: Bad hostname: Check the hostname listed in "Received by: " which is the hostname field in the messages table in the DB and see if it corresponds to the host name where the message should be stored and also make sure you can resolve that host name. The "Received by: " hostname comes from mailscanner which gets the servers hostname at startup so if you change your machines hostmane youll have to restart malscanner for it to take effect. MailScanner Spool folders permissions: Check the users you are using for the quarantine folder in your MalScanner.conf. Quarantine user should not be root. Quarantine User = postfix Quarantine Group = celeryd Quarantine Permissions = 0660 Quarantine Whole Message = yes Quarantine Whole Messages As Queue Files = no And chec...