diff --git a/core/admin/mailu/internal/views.py b/core/admin/mailu/internal/views.py
index b5b1da77..2a71e786 100644
--- a/core/admin/mailu/internal/views.py
+++ b/core/admin/mailu/internal/views.py
@@ -71,6 +71,26 @@ def postfix_alias_map(alias):
         flask.abort(404)
 
 
+@internal.route("/postfix/alias/domain/<domain>")
+def postfix_alias_domain(domain):
+    pass
+
+
+@internal.route("/postfix/alias/map/<alias>")
+def postfix_alias_map(alias):
+    pass
+
+
+@internal.route("/postfix/mailbox/domain/<domain>")
+def postfix_mailbox_domain(domain):
+    pass
+
+
+@internal.route("/postfix/mailbox/map/<mailbox>")
+def postfix_mailbox_map(domain):
+    pass
+
+
 @internal.route("/dovecot/auth/passdb/<user_email>")
 def dovecot_passdb_dict(user_email):
     user = models.User.query.get(user_email) or flask.abort(403)
diff --git a/core/postfix/conf/main.cf b/core/postfix/conf/main.cf
index 19c2d0c2..eee01f69 100644
--- a/core/postfix/conf/main.cf
+++ b/core/postfix/conf/main.cf
@@ -56,9 +56,9 @@ smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
 
 # The alias map actually returns both aliases and local mailboxes, which is
 # required for reject_unlisted_sender to work properly
-virtual_alias_maps = ${podop}alias
-virtual_mailbox_domains = ${podop}domains
-virtual_mailbox_maps = ${podop}mailbox
+virtual_alias_maps = ${podop}alias/domain
+virtual_mailbox_domains = ${podop}mailbox/domain
+virtual_mailbox_maps = ${podop}mailbox/map
 
 # Mails are transported if required, then forwarded to Dovecot for delivery
 relay_domains = ${podop}transport