Fix error

install/upgrade/versions/1.6.2.sh

@@ -21,7 +21,7 @@ upgrade_config_set_value 'UPGRADE_UPDATE_MAIL_TEMPLATES' 'no'
 upgrade_config_set_value 'UPGRADE_REBUILD_USERS' 'no'
 upgrade_config_set_value 'UPGRADE_UPDATE_FILEMANAGER_CONFIG' 'false'
 
-alc=$(cat exim4.conf.template | grep '${lookup{${domain:$authenticated_id}}dsearch{/etc/exim4/domains/}}/limits');
+alc=$(cat /etc/exim4/exim4.conf.template | grep '${lookup{${domain:$authenticated_id}}dsearch{/etc/exim4/domains/}}/limits');
 if [ -z "$alc" ]; then
     sed -i 's| set acl_c_msg_limit|#string1\n#replaceme|'  /etc/exim4/exim4.conf.template
     sed -i '/#replaceme/d' /etc/exim4/exim4.conf.template
@@ -33,4 +33,4 @@ if [ -z "$system_filter" ]; then
     sed -i '/SMTP_RELAY_PASS = \${lookup{pass}lsearch{SMTP_RELAY_FILE}}/a #shouldberemoved\n# Custom Filter\nsystem_filter = \/etc\/exim4\/system.filter\nsystem_filter_user = Debian-exim' /etc/exim4/exim4.conf.template
     # Keep the spacing between the reley_pass and Custom Filter we need to insert a dummy text and remove it later on
     sed -i 's/#shouldberemoved//g' /etc/exim4/exim4.conf.template
-fi
+fi