Problems with email notifications - receiving emails every time anyone posts anything

[msmayz]

Hi -- I'm working on getting my forum set up, and I'm having a problem with email notification settings. Anytime any users post in any forum, everyone else gets an email notification, as if everyone is subscribed to everything. This will be a very active forum, so getting email notifications for every single post will drive us insane. Fortunately, there are only three of us right now, and we are all in the Administrators usergroup.

I have checked the subscription settings for each of us. On the Admin CP > User Manager > [anyone's profile] > Browsing Options > Automatic Topic Subscription Mode, we all have the radio button selected for "Do not subscribe."

Additionally, outside the Admin CP and over on the forum itself, when we view User Settings > Notifications and uncheck all the boxes, we get this seemingly unrelated error message: "You have entered an invalid birthday." All of our birthdays are after 1902, obviously, so I don't see how this could be a problem.

How can we fix this so that we can stop getting email notifications every time someone makes a post?