diff --git a/core/postfix/conf/sqlite-reject-spoofed.cf b/core/postfix/conf/sqlite-reject-spoofed.cf
deleted file mode 100644
index 9cdd6c45..00000000
--- a/core/postfix/conf/sqlite-reject-spoofed.cf
+++ /dev/null
@@ -1,5 +0,0 @@
-dbpath = /data/main.db
-query =
-  SELECT 'REJECT' FROM domain WHERE name='%s'
-  UNION
-  SELECT 'REJECT' FROM alternative WHERE name='%s'
diff --git a/core/postfix/conf/sqlite-transport.cf b/core/postfix/conf/sqlite-transport.cf
deleted file mode 100644
index 6295523b..00000000
--- a/core/postfix/conf/sqlite-transport.cf
+++ /dev/null
@@ -1,3 +0,0 @@
-dbpath = /data/main.db
-query =
-  SELECT 'smtp:['||smtp||']' FROM relay WHERE name='%s'
diff --git a/core/postfix/conf/sqlite-virtual_alias_maps.cf b/core/postfix/conf/sqlite-virtual_alias_maps.cf
deleted file mode 100644
index dcf0a0c6..00000000
--- a/core/postfix/conf/sqlite-virtual_alias_maps.cf
+++ /dev/null
@@ -1,23 +0,0 @@
-dbpath = /data/main.db
-query =
-  SELECT destination
-   FROM
-     (SELECT destination, email, wildcard, localpart, localpart||'@'||alternative.name AS alt_email FROM alias LEFT JOIN alternative ON alias.domain_name = alternative.domain_name
-      UNION
-      SELECT (CASE WHEN forward_enabled=1 THEN (CASE WHEN forward_keep=1 THEN email||',' ELSE '' END)||forward_destination ELSE email END) AS destination, email, 0 as wildcard, localpart, localpart||'@'||alternative.name as alt_email FROM user LEFT JOIN alternative ON user.domain_name = alternative.domain_name
-      UNION
-      SELECT '@'||domain_name as destination, '@'||name as email, 0 as wildcard, '' as localpart, NULL AS alt_email FROM alternative)
-   WHERE
-     (
-      wildcard = 0
-      AND
-      (email = '%s' OR alt_email = '%s')
-     ) OR (
-      wildcard = 1
-      AND
-      '%s' LIKE email
-     )
-   ORDER BY
-     wildcard ASC,
-     length(localpart) DESC
-   LIMIT 1
diff --git a/core/postfix/conf/sqlite-virtual_mailbox_domains.cf b/core/postfix/conf/sqlite-virtual_mailbox_domains.cf
deleted file mode 100644
index af453bce..00000000
--- a/core/postfix/conf/sqlite-virtual_mailbox_domains.cf
+++ /dev/null
@@ -1,5 +0,0 @@
-dbpath = /data/main.db
-query =
-  SELECT name FROM domain WHERE name='%s'
-  UNION
-  SELECT name FROM alternative WHERE name='%s'