diff --git a/site-cookbooks/kosmos_email/recipes/postfix.rb b/site-cookbooks/kosmos_email/recipes/postfix.rb
index 6d6d18e..3942dd1 100644
--- a/site-cookbooks/kosmos_email/recipes/postfix.rb
+++ b/site-cookbooks/kosmos_email/recipes/postfix.rb
@@ -27,6 +27,7 @@ node.normal['postfix']['main']['mynetworks'] = ["10.1.1.0/24", "127.0.0.0/8"]
 node.normal['postfix']['main']['smtpd_use_tls'] = "yes"
 node.normal['postfix']['main']['smtpd_tls_cert_file'] = "/etc/letsencrypt/live/#{hostname}/fullchain.pem"
 node.normal['postfix']['main']['smtpd_tls_key_file'] = "/etc/letsencrypt/live/#{hostname}/privkey.pem"
+node.normal['postfix']['main']['smtpd_peername_lookup'] = "no"
 node.normal['postfix']['main']['mailbox_transport'] = "lmtp:unix:private/dovecot-lmtp"
 node.normal['postfix']['main']['virtual_transport'] = "lmtp:unix:private/dovecot-lmtp"
 node.normal['postfix']['main']['smtputf8_enable'] = "no"