diff --git a/install/sql/incremental/upd_dev_collection.sql b/install/sql/incremental/upd_dev_collection.sql
index 8d673ae866d2f64b228c1f88940b80d0c7712fea..1c4bd539d9f40e84cb199b320a2cac3b1c5607e3 100644
--- a/install/sql/incremental/upd_dev_collection.sql
+++ b/install/sql/incremental/upd_dev_collection.sql
@@ -36,6 +36,9 @@ ALTER TABLE `mail_user` ADD `disableindexer-worker` ENUM('n','y') CHARACTER SET
 -- add SSHFP and DNAME record
 ALTER TABLE `dns_rr` CHANGE `type` `type` ENUM('A','AAAA','ALIAS','CNAME','DNAME','CAA','DS','HINFO','LOC','MX','NAPTR','NS','PTR','RP','SRV','SSHFP','TXT','TLSA','DNSKEY') NULL DEFAULT NULL AFTER `name`;
 
+-- change cc and sender_cc column type
+ALTER TABLE `mail_user` CHANGE `cc` `cc` TEXT CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '';
+
 -- remove SPDY option
 ALTER TABLE `web_domain` DROP COLUMN `enable_spdy`;
 
diff --git a/install/sql/ispconfig3.sql b/install/sql/ispconfig3.sql
index e0c3848aa5fccd8b96aa99d3993cee2cbeddde0c..cdf85d74434f9a7346cf1f23ae8ceecb46d7a13c 100644
--- a/install/sql/ispconfig3.sql
+++ b/install/sql/ispconfig3.sql
@@ -1038,7 +1038,7 @@ CREATE TABLE `mail_user` (
   `maildir` varchar(255) NOT NULL default '',
   `maildir_format` varchar(255) NOT NULL default 'maildir',
   `quota` bigint(20) NOT NULL default '-1',
-  `cc` varchar(255) NOT NULL default '',
+  `cc` text NOT NULL default '',
   `sender_cc` varchar(255) NOT NULL default '',
   `homedir` varchar(255) NOT NULL default '',
   `autoresponder` enum('n','y') NOT NULL default 'n',
diff --git a/interface/web/mail/form/mail_user.tform.php b/interface/web/mail/form/mail_user.tform.php
index 3d1a8fde7fa5b0afe5a56ffdb2a38c456d3849e6..8fb6c4a69227b51a66c7d41cd1b57c0aab9b5a51 100644
--- a/interface/web/mail/form/mail_user.tform.php
+++ b/interface/web/mail/form/mail_user.tform.php
@@ -187,7 +187,7 @@ $form["tabs"]['mailuser'] = array(
 			'default' => '',
 			'value'  => '',
 			'width'  => '30',
-			'maxlength' => '255'
+			'maxlength' => '65535'
 		),
 		'sender_cc' => array (
 			'datatype' => 'VARCHAR',