Haraka

Haraka is an open source SMTP server built around a fast, event-driven architecture. It is highly extensible, making it suitable for people and organizations that need an SMTP server and want the ability to extend it. Its stated scope is SMTP service; the available information does not describe additional mail-related functions, bundled tools, deployment options, or specific extensions. No particular paid product is identified as a direct replacement for Haraka. It therefore should not be presented as a drop-in substitute for any named commercial SMTP server, and no claim can be made that it matches a paid product feature for feature. One limitation is that the supplied information does not specify Haraka’s included capabilities beyond being fast, highly extensible, event driven, and an SMTP server. Those are the only documented characteristics provided here.

#### Added - graceful restart on SIGUSR2 (#3635) #### Changed - BREAKING: SIGUSR2 restarts workers (was exit); run nodemon with `--signal SIGINT` - restart handling runs in the master: after upgrade, restart Haraka fully once #### Fixed - shut down when asked during a restart - reject path traversal in QUEUE DISCARD (#3640) - survive worker deaths during restarts (#3638) - send PROXY header with internal cmds (#3634)…

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