I have 1x proxy/director server 2x backend mail server

The backend servers are using a ldap database and do not have the option to put a proxy=y value. So I put this as a default in the passdb option in the proxy/director config. When I do telnet localhost 110 on the proxy/director, I can authenticate with a test account on svr1.local

1. Will automatically all users be directed to the first server configured in director_mail_servers = svr1.local svr2.local, when the do not have a proxy=y or host=?

If this is the case maybe, we should write this somewhere on https://wiki2.dovecot.org/Director https://doc.dovecot.org/configuration_manual/authentication/proxies/

2. If I change the host= in the ldap server, I think the proxy/director has archived the previous host and still redirects to the old value. Is there a way around this? (stopping/starting dovecot -F resolves this)

3. Do I need the director even in this setup?