Scenario:
You have set up google apps for your domain. Let the link be:- https://www.google.com/a/domain.com/
Now, you forgot the admin password.
Solution:
– Go to https://www.google.com/a/domain.com/ForgotAdminAccountInfo
– Submit the Captcha.
– The password reset instruction will be sent to the secondary email which you kept while creating the google app for your site.
That’s all. Hope this helps.