exim4 smtp-auth

[rlharris@oplink.net]

For SMTP-AUTH in exim4, the authorization string saved in
/etc/exim4/passwd.client is of the form:

    smarthost.isp.net:login_identification:password

with the colon character (:) being the delimiter.

Can this scheme work with a password which itself contains a colon,
such as:

    this:is:my:password

by quoting the password:

    smarthost.isp.net:login_identification:'this:is:my:password'