This will search the drupal.org issue queues across the various projects that make up the Aegir system. If there are no relevant results, please submit an issue there.
I am attempting to determine the specific actions needed to secure the mysql database when you get the "Dummy connection failed to fail" message, without running "mysql_secure_installation"...
So far I've determined you should run the following queries:
DELETE FROM mysql.user WHERE User='';DROP DATABASE test; DELETE FROM mysql.db WHERE Db LIKE 'test%';
Once I confirm this works I will edit the FAQ to include these commands
That and a FLUSH PRIVILEGES; seems to do it.
I'll be testing it a few times more, then update the FAQ and Automatic Install instructions.