diff --git a/roles/mail_server/molecule/default/group_vars/parameters-mandatory.yml b/roles/mail_server/molecule/default/group_vars/parameters-mandatory.yml
index b30c3385ee206b75a0ff6a07178a589a2d799273..e23f203b4c07ffbc316f8d9ffd2607fdb87a1e11 100644
--- a/roles/mail_server/molecule/default/group_vars/parameters-mandatory.yml
+++ b/roles/mail_server/molecule/default/group_vars/parameters-mandatory.yml
@@ -2,12 +2,15 @@
 
 mail_ldap_base_dn: dc=local
 mail_ldap_url: ldap://ldap-server/
+mail_ldap_tls_truststore: "{{ lookup('file', 'tests/data/x509/truststore.pem') }}"
 mail_ldap_postfix_password: postfixpassword
 mail_ldap_dovecot_password: dovecotpassword
 
-# Common parameters (general, not role).
-tls_certificate_dir: tests/data/x509/
-tls_private_key_dir: tests/data/x509/
+imap_tls_certificate: "{{ lookup('file', 'tests/data/x509/{{ inventory_hostname }}_imap.cert.pem') }}"
+imap_tls_key: "{{ lookup('file', 'tests/data/x509/{{ inventory_hostname }}_imap.key.pem') }}"
+
+smtp_tls_certificate: "{{ lookup('file', 'tests/data/x509/{{ inventory_hostname }}_smtp.cert.pem') }}"
+smtp_tls_key: "{{ lookup('file', 'tests/data/x509/{{ inventory_hostname }}_smtp.key.pem') }}"
 
 # common
 ca_certificates: