diff --git a/config/environments/production.rb b/config/environments/production.rb
index cf0faa16..7be7cac6 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -77,7 +77,7 @@ Rails.application.configure do
       authentication:       ENV.fetch("EMAIL_SMTP_AUTH", "plain"),
       enable_starttls_auto: ActiveModel::Type::Boolean.new.cast(ENV.fetch("EMAIL_SMTP_STARTTLS_AUTO", "true")),
       openssl_verify_mode:  ENV["EMAIL_SMTP_OPENSSL_VERIFY_MODE"],
-      tls:                  ActiveModel::Type::Boolean.new.cast(ENV.fetch("EMAIL_SMTP_TLS", "true")),
+      tls:                  ActiveModel::Type::Boolean.new.cast(ENV.fetch("EMAIL_SMTP_TLS", "false")),
     }
   end