[Exim] SMTP Auth

Hiho,

i hope you could help me i'm trying to use SMTP Auth with an MS Outlook Client and this exim configuration:

plain:
driver = plaintext
public_name = PLAIN
server_condition = "\
${if and {{eq{$2}{user}}{eq{$3}{pass}}}{yes}{no}}"
server_set_id = $2

everytime i want to send a message MSO prompts for the username and password and if i enter the correct password the authentification failed.

Please Help me!!

cu Ralf!