[fetchmail]Domain question.

Q: I have a an exchange server on a Active directory domain. In order to 
connect I need to set so the user name login to exchange server looks like this:
Login: Domain_NAME\Username
Password: Password
Problem is that Fetchmail seems to be ignoring "\". Is I put two "\" then I get 
DOMAIN_NAME\\Username
and of course this does not work. Can anyone help with this?
Thanks,
--David Randelman