[Dovecot] Mail replication ... totally confused !

Hello,

I am totally confused configuring replication in dovecot.

In my case I have 2 servers instead of running rsync as a daemon which takes a lot of time I would like

SERVER-A will be the master and SERVER-B will be the slave

My users directly interact with server A, Server B stands as a mails backup only

I've setup SERVER-B ( backup ) like that, NO SPECIAL CONF on master SERVER-A

Is this ok ?? I Don't want to miss any mails Since this is a live server

service aggregator {
     # give enough permissions for mail processes
     #
     fifo_listener replication-notify-fifo {
             user = vmail
             mode = 0600
     }
     unix_listener replication-notify {
             user = vmail
             mode = 0600
     }
}
service replicator {
     # start replication at startup
     #
     process_min_avail = 1
}
service doveadm {
     # if you're using a single virtual user, set this to start ssh 

as vmail # (not root) # user = vmail } service config { # needed to grant access to /var/run/dovecot/config for service doveadm # unix_listener config { user = vmail } }

dsync_remote_cmd = ssh -p 1234 -l%{login} %{host} doveadm dsync-server -u%u -l%{lock_timeout} -n%{namespace}

plugin { mail_replica = remote:vmail@master-server-a.tld replication_full_sync_interval = 1 hours }