Manage Email (Mailing) Lists
If you've created email (mailing) lists for your users using the Google Admin console, they're automatically added to your Account Administrator account for the Google Apps Message Security and Google Apps Message Discovery services. Your service then protects the lists using the junk and virus settings for that account. You cannot remove the mailing list aliases from the Account Administrator account.
Because all email lists are aliases for your account, you'll receive a copy of all messages sent to any list. You'll also see copies of these messages in your Personal Archive in the Message Center.