Release 2.7.3

• Changes
  • smtp_proxy & qmail-queue: default to enabled for outbound deliveries
    (previously used Outbound), to better matches user expectations.
• New Features
  • outbound: allow passing notes to send_email (#1295)
• Improvements
  • logging: emit log message queue before shutting down (#1296)
  • result_store: permit redis pub/sub to work when host != localhost (#1277)
  • tests: quiet the extremely verbose messages (#1282)
  • rspamd: add timeout error handling (#1276)
  • watch: fix display of early_talker results (#1281)
  • spamassassin: publish results to result_store (#1280)
  • karma: can now connect to redis on hosts other than localhost (#1275)
  • geoip & p0f: don't log empty/null values from RFC 1918 connects (#1267)
  • redis: make plugin params match docs (#1273)
  • mailbody: small refactoring (#1315)
  • smtp_proxy & qmail-queue: default to enabled for outbound (#1308)
• Bug Fixes
  • redis: use correct path for db.select (#1273)
  • count errors correctly (#1274)
  • logger: ignore null arguments (#1299)
  • connection: pause for hook_reset_transaction (#1303)
  • rcpt_to.routes: update redis usage for compat with redis plugin (#1302)
  • smtp_forward: use correct config path to auth settings (#1327)
  • messagestream: correctly pass options parameter to get_data (#1316)
  • spf: honour configuration for mfrom scope (#1322)
  • outbound: Add missing dash to 'Final-Recipient' header name (#1320)