diff --git a/roles/base/files/postfix/main.cf/main.cf.smtp-mm b/roles/base/files/postfix/main.cf/main.cf.smtp-mm
index ab4668bc53..65e3cf79d9 100644
--- a/roles/base/files/postfix/main.cf/main.cf.smtp-mm
+++ b/roles/base/files/postfix/main.cf/main.cf.smtp-mm
@@ -705,6 +705,7 @@ message_size_limit = 20971520
 smtpd_use_tls = yes
 smtpd_tls_security_level = may
 smtpd_tls_auth_only = yes
+smtpd_tls_protocols = !SSLv2, !SSLv3
 smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
 smtpd_tls_mandatory_ciphers = high
 smtpd_tls_mandatory_exclude_ciphers = aNULL, MD5, RC4