Not having any problems sending or receiving mail.

This may seem a silly question, but is there any way to log out of hotmail when finished, it's logged on all the time

Mines worked, mines is a 1st Gen Ipod Touch and an hotmail.com account.

Worked first time.

When i try to send an email, it says "Cannot Send Mail: The Sender Address Was Invalid" When i know for a fact the address is right

worked 1st time !

Tried all of that and the information is perfect i know but its telling me cannot get mail, username or password is incorrect for me@hotmail.com!! But i know its right!!