I am trying to set up my iPhone and MacBook Mail to send and receive mail. I had it so it could recieve mail, but would not send. I changed my password hoping that was the sending problem. Now I can not send or receive. I have double checked all the passwords and updated them. But I keep getting "Can not send mail - The user name or password for SMPT:firstname.lastname@example.org is incorrect" As I said, I know the passwords are correct, and I know my user name is correct. Can anyone help?