diff --git a/core/admin/mailu/internal/__init__.py b/core/admin/mailu/internal/__init__.py
index 6419ad10..f929607f 100644
--- a/core/admin/mailu/internal/__init__.py
+++ b/core/admin/mailu/internal/__init__.py
@@ -6,7 +6,7 @@ import socket
 import flask
 
 
-internal = flask.Blueprint('internal', __name__)
+internal = flask.Blueprint('internal', __name__, template_folder='templates')
 
 @internal.app_errorhandler(RateLimitExceeded)
 def rate_limit_handler(e):
diff --git a/core/dovecot/sieve/before.sieve b/core/admin/mailu/internal/templates/default.sieve
similarity index 55%
rename from core/dovecot/sieve/before.sieve
rename to core/admin/mailu/internal/templates/default.sieve
index 6ebc20c5..5a80a181 100644
--- a/core/dovecot/sieve/before.sieve
+++ b/core/admin/mailu/internal/templates/default.sieve
@@ -8,8 +8,6 @@ require "regex";
 require "relational";
 require "date";
 require "comparator-i;ascii-numeric";
-require "vnd.dovecot.extdata";
-require "vnd.dovecot.execute";
 require "spamtestplus";
 require "editheader";
 require "index";
@@ -20,21 +18,23 @@ if header :index 2 :matches "Received" "from * by * for <*>; *"
   addheader "Delivered-To" "<${3}>";
 }
 
-if allof (string :is "${extdata.spam_enabled}" "1",
-          spamtest :percent :value "gt" :comparator "i;ascii-numeric"  "${extdata.spam_threshold}")
+{% if user.spam_enabled %}
+if spamtest :percent :value "gt" :comparator "i;ascii-numeric"  "{{ user.spam_threshold }}"
 {
   setflag "\\seen";
   fileinto :create "Junk";
   stop;
 }
+{% endif %}
 
 if exists "X-Virus" {
   discard;
   stop;
 }
 
-if allof (string :is "${extdata.reply_enabled}" "1",
-          currentdate :value "le" "date" "${extdata.reply_enddate}")
+{% if user.reply_enabled %}
+if currentdate :value "le" "date" "{{ user.reply_enddate }}"
 {
-  vacation :days 1 :subject "${extdata.reply_subject}" "${extdata.reply_body}";
+ vacation :days 1 :subject "{{ user.reply_subject }}" "{{ user.reply_body }}";
 }
+{% endif %}
diff --git a/core/admin/mailu/internal/views.py b/core/admin/mailu/internal/views.py
index 83cd4718..3b6163e0 100644
--- a/core/admin/mailu/internal/views.py
+++ b/core/admin/mailu/internal/views.py
@@ -122,7 +122,7 @@ def dovecot_quota(ns, user_email):
 def dovecot_sieve(script, user_email):
     user = models.User.query.get(user_email) or flask.abort(404)
     if script == "default":
-        pass
+        return flask.jsonify(flask.render_template("default.sieve"))
     else:
         flask.abort(404)
 
diff --git a/core/dovecot/conf/dovecot.conf b/core/dovecot/conf/dovecot.conf
index bd4e2893..4d3302ba 100644
--- a/core/dovecot/conf/dovecot.conf
+++ b/core/dovecot/conf/dovecot.conf
@@ -139,9 +139,6 @@ plugin {
   sieve = dict:proxy:/tmp/podop.socket:sieve
   sieve_plugins = sieve_imapsieve sieve_extprograms
   sieve_global_extensions = +spamtest +spamtestplus +vnd.dovecot.execute +editheader
-  sieve_before = /var/lib/dovecot/before.sieve
-  sieve_default = /var/lib/dovecot/default.sieve
-  sieve_after = /var/lib/dovecot/after.sieve
 
   # Sieve execute
   sieve_execute_bin_dir = /var/lib/dovecot/bin
diff --git a/core/dovecot/sieve/after.sieve b/core/dovecot/sieve/after.sieve
deleted file mode 100644
index e69de29b..00000000
diff --git a/core/dovecot/sieve/bin/mailtrain b/core/dovecot/sieve/bin/mailtrain
deleted file mode 100755
index cfa36398..00000000
--- a/core/dovecot/sieve/bin/mailtrain
+++ /dev/null
@@ -1,3 +0,0 @@
-#!/bin/sh
-
-rspamc -h antispam:11334 -P mailu "learn_$1" /dev/stdin <&0
diff --git a/core/dovecot/sieve/default.sieve b/core/dovecot/sieve/default.sieve
deleted file mode 100644
index e69de29b..00000000