Fatal: -N parameter requires syncing with remote host

[lejeczek]

hi

I get with default (not declared) 
replication_dsync_parameters above errors, and for users 
that I'm trying to disable replication.
I'm trying to disable with: override_fields = 
mail_replica="" in userdb and just in case (ldap) also 
user_attrs = =mail_replica=""

my replication conf is pretty basic:

service replicator {
  process_min_avail = 1
  unix_listener replicator-doveadm {
    mode = 0660
  }
}

service aggregator {
  fifo_listener replication-notify-fifo {
    user = vmail
    group = Domain Users
    mode = 0660
  }
  unix_listener replication-notify {
    user = vmail
    group = Domain Users
  }
}

service doveadm {
  inet_listener {
    port = 12345
  }
}

doveadm_password = secret
#

I can tell simple test:

doveadm -v sync -f -u my@my.domain ssh vmail@server doveadm 
dsync-server -u me@my.domain

works. It's for a user that I don't want replication.

What am I missing here?
many thanks