diff --git a/util/db-mysql.sql b/util/db-mysql.sql
index f8fafdbf..9de729d2 100644
--- a/util/db-mysql.sql
+++ b/util/db-mysql.sql
@@ -8,7 +8,7 @@ create table if not exists `sph_counter` (
 
 create table if not exists `sph_index` (
   `id` bigint not null,
-  `from` char(255) default null,
+  `from` tinyblob default null,
   `to` text(8192) default null,
   `fromdomain` char(255) default null,
   `todomain` text(512) default null,
@@ -27,7 +27,7 @@ create table if not exists `sph_index` (
 
 create table if not exists `metadata` (
   `id` bigint unsigned not null auto_increment,
-  `from` varchar(128) not null,
+  `from` varchar(255) not null,
   `fromdomain` varchar(64) not null,
   `subject` blob(512) default null,
   `spam` tinyint(1) default 0,