diff --git a/group_vars/all b/group_vars/all
index a63f5c60..7a5b0993 100644
--- a/group_vars/all
+++ b/group_vars/all
@@ -1,6 +1,7 @@
 # General
 reset_files:          false       # Cleans up all CyMaIS files. It's necessary to run to whole playbook and not particial roles when using this function.
 verbose:              false       # Prints well formated debug information
+test_run:             false       # Executes test routines instead of productive routines
 database_delay:       "0"         # Database delay to wait for the central database before continue tasks
 top_domain:           "localhost" # Change this in inventory to your domain
 ip4_address:          "127.0.0.1" # Change thie in inventory to the ip address of your server
diff --git a/roles/docker-attendize/tasks/main.yml b/roles/docker-attendize/tasks/main.yml
index 7fea90b4..ea001a88 100644
--- a/roles/docker-attendize/tasks/main.yml
+++ b/roles/docker-attendize/tasks/main.yml
@@ -2,12 +2,14 @@
 - name: "include docker-compose-common.yml"
   include_tasks: docker-compose-common.yml
 
-- name: receive {{ mail_interface_domain }} certificate
-  command: certbot certonly --agree-tos --email {{ administrator_email }} --non-interactive --webroot -w /var/lib/letsencrypt/ -d {{ mail_interface_domain }}
-
-- name: receive {{ domain }} certificate
-  command: certbot certonly --agree-tos --email {{ administrator_email }} --non-interactive --webroot -w /var/lib/letsencrypt/ -d {{ domain }}
-
+- name: "include tasks to receive attendize certbot certificate"
+  include_tasks: recieve-certbot-certificate.yml
+  vars:
+    domain: "{{ item }}"
+  loop:
+    - "{{ mail_interface_domain }}"
+    - "{{ domain }}"
+    
 - name: configure {{domain}}.conf
   template: 
     src: roles/nginx-docker-reverse-proxy/templates/domain.conf.j2 
diff --git a/roles/nginx-domain-redirect/tasks/main.yml b/roles/nginx-domain-redirect/tasks/main.yml
index 506c3acd..0dccac71 100644
--- a/roles/nginx-domain-redirect/tasks/main.yml
+++ b/roles/nginx-domain-redirect/tasks/main.yml
@@ -1,7 +1,8 @@
 ---
-- name: recieve redirect source certificates
-  command: certbot certonly --agree-tos --email {{administrator_email}} --non-interactive --webroot -w /var/lib/letsencrypt/ -d {{item.source}}
-  loop: "{{domain_mappings}}"
+- name: "include task receive certbot certificate"
+  include_tasks: recieve-certbot-certificate.yml
+  vars:
+    domain: "{{ domain }}"
 
 - name: configure nginx redirect configurations
   vars:
diff --git a/tasks/recieve-certbot-certificate.yml b/tasks/recieve-certbot-certificate.yml
index 77f063ee..c0bd9218 100644
--- a/tasks/recieve-certbot-certificate.yml
+++ b/tasks/recieve-certbot-certificate.yml
@@ -1,2 +1,5 @@
-- name: recieve certbot certificate for {{domain}}
-  command: certbot certonly --agree-tos --email {{administrator_email}} --non-interactive --webroot -w /var/lib/letsencrypt/ -d {{domain}}
\ No newline at end of file
+- name: recieve certbot certificate for {{ domain }}
+  command: >-
+    certbot certonly --agree-tos --email {{ administrator_email }}
+    --non-interactive --webroot -w /var/lib/letsencrypt/ -d {{ domain }}
+    {{ '--test-cert' if test_run | bool else '' }}
\ No newline at end of file