Issue 267: hMailServer sometimes generated invalid message UIDs. This could have the effect that new messages did not show up in folders. The problem occurred if a rule executed a script function which saved a message, and another rule moved the same message after that. This fix prevents the problem from occurring again. To repair the problem in the database, run the Reset folder UIDs maintenance script, located here: http://www.hmailserver.com/documentation/latest/?page=maintenance_scripts