diff --git a/postfix/main.cf b/postfix/main.cf
index e4ca377..d4e42a6 100644
--- a/postfix/main.cf
+++ b/postfix/main.cf
@@ -46,7 +46,7 @@ cyrus_sasl_config_path = /etc/postfix/sasl
 smtpd_tls_key_file = /path/2/privkey.pem
 smtpd_tls_cert_file = /path/2/fullchain.pem
 # SMTP Server security level: none|may|encrypt
-smtpd_tls_security_level = may
+smtpd_tls_security_level = encrypt
 
 # List of CAs for SMTP Client to trust
 # Prefer this over _CApath when smtp is running chrooted