does my apple id affect mac mail
When I forget and change my Apple ID password, does it have anything to do with my Mac Mail? It seems like every time I change the Apple ID password, I begin to have trouble with my outgoing mail service but I can't for the life of me understand where I need to change these things. It immediately messes up my Apple TV (I have to change the password there after I change it online.) What are all the things associated with my Apple ID Password and where do I need to change them? Thank you.
MacBook Pro (15-inch Core 2 Duo), Mac OS X (10.6.8)