diff --git a/conf/horde_imp_conf.php b/conf/horde_imp_conf.php
new file mode 100644
index 0000000..845511b
--- /dev/null
+++ b/conf/horde_imp_conf.php
@@ -0,0 +1,19 @@
+<?php
+/* CONFIG START. DO NOT CHANGE ANYTHING IN OR AFTER THIS LINE. */
+// $Id: 48bf0b4cc99e7941b4432a29e70e145b8d654cc7 $
+$conf['user']['allow_view_source'] = true;
+$conf['server']['server_list'] = 'none';
+$conf['compose']['use_vfs'] = true;
+$conf['compose']['link_attachments'] = false;
+$conf['compose']['attach_size_limit'] = 0;
+$conf['compose']['attach_count_limit'] = 0;
+$conf['compose']['reply_limit'] = 200000;
+$conf['compose']['ac_threshold'] = 3;
+$conf['compose']['htmlsig_img_size'] = 30000;
+$conf['pgp']['keylength'] = 4096;
+$conf['maillog']['driver'] = 'history';
+$conf['sentmail']['driver'] = 'Null';
+$conf['contactsimage']['backends'] = array('IMP_Contacts_Avatar_Addressbook');
+$conf['tasklist']['use_tasklist'] = true;
+$conf['notepad']['use_notepad'] = true;
+/* CONFIG END. DO NOT CHANGE ANYTHING IN OR BEFORE THIS LINE. */
diff --git a/scripts/_common.sh b/scripts/_common.sh
index b5ec7ad..fb88f9d 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -24,6 +24,7 @@ patch_app() {
 
 config_horde() {
     ynh_backup_if_checksum_is_different "$final_path/horde/config/conf.php"
+    ynh_backup_if_checksum_is_different "$final_path/horde/imp/config/conf.php"
     ynh_backup_if_checksum_is_different "$final_path/horde/config/registry.local.php"
     ynh_backup_if_checksum_is_different "$final_path/horde/gollem/config/backends.local.php"
     ynh_backup_if_checksum_is_different "$final_path/horde/ingo/config/backends.local.php"
@@ -38,6 +39,8 @@ config_horde() {
     ynh_replace_string "__ADMIN_USER__" "$admin" "$final_path/horde/config/conf.php"
     ynh_replace_string "__SECRET_KEY__" "$secret_key" "$final_path/horde/config/conf.php"
     
+    cp ../conf/horde_imp_conf.php "$final_path/horde/imp/config/conf.php"
+    
     cp ../conf/horde_registry.php "$final_path/horde/config/registry.local.php"
     ynh_replace_string "__PATH__" "$path_url" "$final_path/horde/config/registry.local.php"
 
@@ -47,6 +50,7 @@ config_horde() {
     cp ../conf/ingo_backends.php "$final_path/horde/ingo/config/backends.local.php"
 
     ynh_store_file_checksum "$final_path/horde/config/conf.php"
+    ynh_store_file_checksum "$final_path/horde/imp/config/conf.php"
     ynh_store_file_checksum "$final_path/horde/config/registry.local.php"
     ynh_store_file_checksum "$final_path/horde/gollem/config/backends.local.php"
     ynh_store_file_checksum "$final_path/horde/ingo/config/backends.local.php"
diff --git a/scripts/install b/scripts/install
index f5af2e6..808c13e 100755
--- a/scripts/install
+++ b/scripts/install
@@ -127,6 +127,7 @@ ynh_app_setting_set $app secret_key "$secret_key"
 patch_app
 
 # Configure Horde
+ls -la /var/www/horde/horde/imp/config
 config_horde
 
 # Create a dedicated nginx config