User account lockouts
This feature applies to all kinds of users -- Delphix and LDAP. It also applies to usernames that do not correspond to any user in the system. A user who enters a wrong password three times in a row is "locked out" (i.e., unable to continue attempting to log in) for an initial period of 30 seconds. After three more bad login attempts, the user must wait 60 seconds, then 90 seconds, and so on.
Troubleshooting a User Account Lockout
The initial wait time for any future lockouts is reset to 30 seconds when the user successfully logs in or when an administrator resets the user's password. When an administrator resets a locked-out user's password, the user can immediately attempt to log in. The alternative is to call Delphix Support.