problems sending mail w/ mutt, emacs

[rhythmicus]

i am having problems sending mail.  after i have composed a message, it saves the 
message as an attachment.  is this right, or is there a way around this?  i am using 
emacs as my editor.  also, after i have sent mail, it always comes back saying that it 
couldn't be delivered.  i noticed that it is giving the wrong "From:" address.  it 
should read [EMAIL PROTECTED], but instead it is 
[EMAIL PROTECTED]  any suggestions?