[exim] Setup Authentication to pass regardless of whether th…

Hi All,

I need to set up a mail server that is able to allow users to relay
regardless of whether the authentication information valid or not.

It needs to support SPA and cram-md5, I've already got plain to work.

plain:
driver = plaintext
public_name = PLAIN
server_condition = \
${if and eq{}{}{1}{0}}
server_set_id = $2

login:
driver = plaintext
public_name = LOGIN
server_prompts = "Username:: : Password::"
server_condition = ${if and eq{}{}{1}{0}}
server_set_id = $1

 cram_md5:
    driver = cram_md5
    public_name = CRAM-MD5
    server_secret =
    server_set_id = $1

SPA:
    driver = spa
    public_name = NTLM
    server_password =
    server_set_id = $1

This server is on an internal network and are using a firewall to
transparently redirect connections going out on port 25.
Any Suggestions greatly appreciated.

Cheers
cya
Andrew