exim4 smtp auth

[Andrew Critchlow]

Is there anyway i can check if my smtp auth is working with exim4?
 
I have enabled TLS with certificates and i have unhashed, plain_server:
 
I have also used htpasswd -nd username and put the output into /etc/exim4/passwd
 
I have also set: MAIN_TLS_ENABLE = true
 
But when I try and send an email from a client (MS Outlook) it goes straight 
through and I didn't need to specify that the smtp servers requires 
authentication?
 
 
 
thanks