i.e I receive email sent to [EMAIL PROTECTED] but not [EMAIL PROTECTED], and user@ belongs to the admins@ list.
Is [EMAIL PROTECTED] a moderated list? Is posting to the list limited to subscribers? Do other subscribers to that list get the messages?
If it's moderated, set a moderator and that address will get the message before it goes out to the list. Depending on your list options, you may have set up the list in a way where the messages you send are ignored.