add config option to disable ssl/tls for smtp

config/initializers/action_mailer.rb

@@ -4,7 +4,14 @@ ActionMailer::Base.default_url_options = {
 }
 if ENV["SMTP_ADDRESS"]
   %w(ADDRESS PORT DOMAIN USER_NAME PASSWORD).each do |setting|
-    next unless ENV["SMTP_#{setting}"]
+    next unless ENV["SMTP_#{setting}"].present?
     ActionMailer::Base.smtp_settings[setting.downcase.to_sym] = ENV["SMTP_#{setting}"]
   end
 end
+if ENV["SMTP_NOTLS"].present?
+  ActionMailer::Base.smtp_settings.merge!(
+    enable_starttls_auto: false,
+    ssl: false,
+    tls: false
+  )
+end

env.example

@@ -3,6 +3,7 @@ FRAB_HOST=localhost
 FRAB_PROTOCOL=http
 FROM_EMAIL=frab@localhost
 SMTP_ADDRESS=localhost
-SMTP_PORT=587
-SMTP_USER_NAME
-SMTP_PASSWORD
+SMTP_PORT=25
+SMTP_NOTLS=true
+SMTP_USER_NAME=
+SMTP_PASSWORD=