diff --git a/defaults/main.yml b/defaults/main.yml
index 4da926e..7feec4d 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -276,6 +276,13 @@ postfix_virtual_alias_maps:
 
 postfix_local_dest_concurrency_limit: 2
 postfix_default_destination_concurrency_limit: 5
+postfix_smtp_destination_concurrency_limit: "{{ postfix_default_destination_concurrency_limit }}"
+# Other rate limiting parameters
+postfix_enforce_users_rate_limiting: false
+postfix_smtpd_client_message_rate_limit: 4
+postfix_anvil_rate_time_unit: "60s"
+postfix_default_destination_rate_delay: "2s"
+postfix_default_destination_recipient_limit: 50
 
 postfix_behind_haproxy: False
 postfix_postscreen_port: 1024
diff --git a/templates/main.cf.j2 b/templates/main.cf.j2
index 6ad36b4..bc98b66 100644
--- a/templates/main.cf.j2
+++ b/templates/main.cf.j2
@@ -745,6 +745,15 @@ smtpd_banner = $myhostname ESMTP $mail_name
 
 local_destination_concurrency_limit = {{ postfix_local_dest_concurrency_limit }}
 default_destination_concurrency_limit = {{ postfix_default_destination_concurrency_limit }}
+smtp_destination_concurrency_limit = {{ postfix_smtp_destination_concurrency_limit }}
+
+{% if postfix_enforce_users_rate_limiting %}
+# Other rate limiting parameters
+smtpd_client_message_rate_limit = {{ postfix_smtpd_client_message_rate_limit }}
+anvil_rate_time_unit = {{ postfix_anvil_rate_time_unit }}
+default_destination_rate_delay = {{ postfix_default_destination_rate_delay }}
+default_destination_recipient_limit = {{ postfix_default_destination_recipient_limit }}
+{% endif %}
 
 # DEBUGGING CONTROL
 #