diff --git a/defaults/main.yml b/defaults/main.yml
index 711a2b1..5407b58 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,3 +1,5 @@
 ---
 # Default values for variables of the role
 # variable_name: value
+letsencrypt_account_email: certs@example.org
+domain: example.org
diff --git a/tasks/configure_prometheus_exporters_certificates.yml b/tasks/configure_prometheus_exporters_certificates.yml
index 5061056..2f9a724 100644
--- a/tasks/configure_prometheus_exporters_certificates.yml
+++ b/tasks/configure_prometheus_exporters_certificates.yml
@@ -23,11 +23,11 @@
     state: stopped
 
 - name: Request certificate for node-metrics
-  shell: "certbot certonly --agree-tos --email certs@susurrando.com --standalone -n -d node-metrics-{{ inventory_hostname }}"
+  shell: "certbot certonly --agree-tos --email {{ letsencrypt_account_email }} --standalone -n -d node-metrics-{{ inventory_hostname }}.{{ domain }}"
   args:
     creates: "/etc/letsencrypt/live/node-metrics-{{ inventory_hostname }}/fullchain.pem"
 
 - name: Request certificate for postfix-metrics
-  shell: "certbot certonly --agree-tos --email certs@susurrando.com --standalone --agree-tos --email gestor@susurrando.com -n -d postfix-metrics-{{ inventory_hostname }}"
+  shell: "certbot certonly --agree-tos --email {{ letsencrypt_account_email }} --standalone -n -d postfix-metrics-{{ inventory_hostname }}.{{ domain }}"
   args:
     creates: "/etc/letsencrypt/live/postfix-metrics-{{ inventory_hostname }}/fullchain.pem"