<?xml version="1.0"?>
<instances>
        ...
        <instance id="example" ... >
                ...
                <auths>
                        <auth module="krb_userlist">
                                <user user="dmuse@AD.FIRSTWORKS.COM"/>
                                <user user="kmuse@AD.FIRSTWORKS.COM"/>
                                <user user="imuse@AD.FIRSTWORKS.COM"/>
                                <user user="smuse@AD.FIRSTWORKS.COM"/>
                                <user user="FIRSTWORKS.COM\dmuse"/>
                                <user user="FIRSTWORKS.COM\kmuse"/>
                                <user user="FIRSTWORKS.COM\imuse"/>
                                <user user="FIRSTWORKS.COM\smuse"/>
                        <auth>
                </auths>
                ...
        </instance>
        ...
</instances>