diff --git a/ext_tables.sql b/ext_tables.sql
index a76cbdc1bd2930d65dc818a8446760076f229589..e56a5c475b33e19fb5d603a390249566147bf72c 100644
--- a/ext_tables.sql
+++ b/ext_tables.sql
@@ -10,12 +10,12 @@ CREATE TABLE tx_sgmail_domain_model_mail (
 	cc_addresses varchar(255) DEFAULT '' NOT NULL,
 	bcc_addresses varchar(255) DEFAULT '' NOT NULL,
 	priority int(11) unsigned DEFAULT '0' NOT NULL,
-	extension_key varchar(30) DEFAULT '' NOT NULL,
-	template_name varchar(30) DEFAULT '' NOT NULL,
-	reply_to varchar(30) DEFAULT '' NOT NULL,
+	extension_key varchar(255) DEFAULT '' NOT NULL,
+	template_name varchar(255) DEFAULT '' NOT NULL,
+	reply_to varchar(255) DEFAULT '' NOT NULL,
 	sending_time int(11) unsigned DEFAULT '0' NOT NULL,
 	last_sending_time int(11) unsigned DEFAULT '0' NOT NULL,
-	language varchar(30) DEFAULT '' NOT NULL,
+	language varchar(255) DEFAULT '' NOT NULL,
 
 	tstamp int(11) unsigned DEFAULT '0' NOT NULL,
 	crdate int(11) unsigned DEFAULT '0' NOT NULL,