diff --git a/patch.sh b/patch.sh
index 0f4f956..c1daea9 100644
--- a/patch.sh
+++ b/patch.sh
@@ -34,6 +34,7 @@ wget -nc -P /etc/postfix/ https://raw.githubusercontent.com/sbennell/pve-patch/m
 wget --user=bennellit --ask-password -P /etc/postfix/ https://bennellit.com.au/Files/noaccess/{sasl_passwd,sender_canonical}
 postmap hash:/etc/postfix/sasl_passwd
 postmap hash:/etc/postfix/sender_canonical
+cp /etc/ssl/certs/thawte_Primary_Root_CA.pem /etc/postfix/cacert.pem
 chown root:root /etc/postfix/sasl_passwd /etc/postfix/sasl_passwd.db  
 chmod 644 /etc/postfix/sasl_passwd /etc/postfix/sasl_passwd.db  
 chown root:root /etc/postfix/sender_canonical /etc/postfix/sender_canonical.db