[Dovecot][Netfilter] Report failed logins from mailcowauth.php, anchor default rules

data/conf/dovecot/auth/passwd-verify.lua

@@ -1,8 +1,4 @@
 function auth_password_verify(request, password)
-  if request.domain == nil then
-    return dovecot.auth.PASSDB_RESULT_USER_UNKNOWN, "No such user"
-  end
-
   local json = require "cjson"
   local ltn12 = require "ltn12"
   local https = require "ssl.https"
@@ -11,7 +7,10 @@ function auth_password_verify(request, password)
   local req = {
     username = request.user,
     password = password,
+    -- address that connected to Dovecot, for proxied connections the proxy
     real_rip = request.real_rip,
+    -- address of the client, also for proxied connections
+    client_ip = request.rip,
     service = request.service
   }
   local req_json = json.encode(req)