Fixes #6641 Multiserver sync issues with some older systems

Author: tbrehm

install/sql/incremental/upd_0099.sql

@@ -0,0 +1,6 @@
+ALTER TABLE `spamfilter_policy` 
+CHANGE `warnvirusrecip` `warnvirusrecip` VARCHAR(1) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL DEFAULT 'N', 
+CHANGE `warnbannedrecip` `warnbannedrecip` VARCHAR(1) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL DEFAULT 'N', 
+CHANGE `warnbadhrecip` `warnbadhrecip` VARCHAR(1) CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL DEFAULT 'N';
+ALTER TABLE `sys_ini` CHANGE `default_logo` `default_logo` TEXT CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL;
+ALTER TABLE `sys_ini` CHANGE `custom_logo` `custom_logo` TEXT CHARACTER SET utf8mb3 COLLATE utf8mb3_general_ci NULL;

install/sql/ispconfig3.sql

@@ -1532,9 +1532,9 @@ CREATE TABLE `spamfilter_policy` (
   `addr_extension_spam` varchar(64) default NULL,
   `addr_extension_banned` varchar(64) default NULL,
   `addr_extension_bad_header` varchar(64) default NULL,
-  `warnvirusrecip` enum('N','Y') default 'N',
-  `warnbannedrecip` enum('N','Y') default 'N',
-  `warnbadhrecip` enum('N','Y') default 'N',
+  `warnvirusrecip` VARCHAR(1) NULL default 'N',
+  `warnbannedrecip` VARCHAR(1) NULL default 'N',
+  `warnbadhrecip` VARCHAR(1) NULL default 'N',
   `newvirus_admin` varchar(64) default NULL,
   `virus_admin` varchar(64) default NULL,
   `banned_admin` varchar(64) default NULL,
@@ -1741,8 +1741,8 @@ CREATE TABLE `sys_group` (
 CREATE TABLE `sys_ini` (
   `sysini_id` int(11) unsigned NOT NULL auto_increment,
   `config` longtext,
-  `default_logo` text NOT NULL,
-  `custom_logo` text NOT NULL,
+  `default_logo` text NULL,
+  `custom_logo` text NULL,
   PRIMARY KEY  (`sysini_id`)
 ) DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;