diff --git a/roles/mail_server/templates/99-local.conf.j2 b/roles/mail_server/templates/99-local.conf.j2
index 0f91c09f199b9c05dfb8ef7c30cfc6efe1553431..e5178291718081b59771dbcc7acb132fa204936a 100644
--- a/roles/mail_server/templates/99-local.conf.j2
+++ b/roles/mail_server/templates/99-local.conf.j2
@@ -32,7 +32,7 @@ service auth {
 ssl_cert = </etc/ssl/certs/{{ ansible_fqdn }}_imap.pem
 ssl_key = </etc/ssl/private/{{ ansible_fqdn }}_imap.key
 ssl_dh=</etc/ssl/private/{{ inventory_hostname }}_imap.dh.pem
-ssl_protocols = {{ mail_server_tls_protocols | join(' ') }}
+ssl_min_protocol = {{ mail_server_minimum_tls_protocol }}
 ssl_cipher_list = {{ mail_server_tls_ciphers }}
 ssl = required