A new minimum password length has now been introduced to Google Apps domains. If administrators manage user passwords using the Control Panel, the new minimum is 8 characters instead of 6.
If domains are using a Single Sign-On system, then the administrator is responsible for this authentication system so are not affected.
If admins are using a password-sync solution, then please ensure that the system is sending hashed passwords to Google. If it’s sending hashed passwords then users are not affected by this new requirement.
If the password-sync solution is sending plain-text passwords, then this is not recommend and the domain will be affected by this change.
Please note that this change only affects new passwords and password resets, not any existing passwords.