diff --git a/config/application.rb b/config/application.rb
index 884712a..4285044 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -29,27 +29,14 @@ module Ingang
     config.bigbluebutton_secret = ENV["BIGBLUEBUTTON_SECRET"]
 
     # Tell Action Mailer to use smtp server, if configured
-    config.action_mailer.delivery_method = ENV['SMTP_SERVER'].present? ? :smtp : :sendmail
-
-    ActionMailer::Base.smtp_settings =
-      if ENV['SMTP_AUTH'].present? && ENV['SMTP_AUTH'] != "none"
-        {
-          address: ENV['SMTP_SERVER'],
-          port: ENV["SMTP_PORT"],
-          domain: ENV['SMTP_DOMAIN'],
-          user_name: ENV['SMTP_USERNAME'],
-          password: ENV['SMTP_PASSWORD'],
-          authentication: ENV['SMTP_AUTH'],
-          enable_starttls_auto: ENV['SMTP_STARTTLS_AUTO'],
-        }
-      else
-        {
-          address: ENV['SMTP_SERVER'],
-          port: ENV["SMTP_PORT"],
-          domain: ENV['SMTP_DOMAIN'],
-          enable_starttls_auto: ENV['SMTP_STARTTLS_AUTO'],
-        }
-      end
+    config.action_mailer.delivery_method = :smtp
+    config.action_mailer.smtp_settings = {
+      address: 'smtp.flowmailer.net',
+      port: 587,
+      user_name: ENV['SMTP_USERNAME'],
+      password: ENV['SMTP_PASSWORD'],
+      authentication: 'plain',
+      enable_starttls_auto: true }
 
     config.admin_name = ENV["INGANG_ADMIN_NAME"] || 'admin'
     config.admin_password = ENV["INGANG_ADMIN_PASSWORD"] || ''