AP-504: Makes SMTP HELO (domain) configurable

Author: danschmidt5189

config/altmedia.yml

@@ -7,6 +7,7 @@ default: &default
   mail_confirm_email: <%= ENV["CONFIRM_EMAIL"] || "baker-library@berkeley.edu" %>
   mail_privdesk_email: <%= ENV["PRIVDESK_EMAIL"] || "privdesk-library@berkeley.edu" %>
   mail_security_email: <%= ENV["SECURITY_EMAIL"] || "libsecurity@lists.berkeley.edu" %>
+  mail_smtp_domain: <%= ENV["MAIL_DOMAIN"] || "lib.berkeley.edu" %>
   mail_smtp_password: <%= ENV["MAIL_PASSWORD"] %>
   mail_smtp_username: <%= ENV["MAIL_USERNAME"] || "lib-noreply@berkeley.edu" %>
   # $PATRON_API_URL is set in https://git.lib.berkeley.edu/ops/docker-swarm/blob/master/files/production/swarm/stacks/framework.yml

config/environments/production.rb

@@ -85,7 +85,7 @@
   config.action_mailer.smtp_settings = {
     address: 'smtp.gmail.com',
     port: '587',
-    domain: 'lib.berkeley.edu',
+    domain: config.altmedia['mail_smtp_domain'],
     user_name: config.altmedia['mail_smtp_username'],
     password: config.altmedia['mail_smtp_password'],
     authentication: 'plain',