Kristian Klausen authored Mar 07, 2021 and Jelle van der Waa committed Apr 07, 2021

For spam checking it is recommend to use our own recursive resolver[1]
to avoid rate limiting by using a public resolver.

unbound is already installed but the system wasn't configured to use it.

[1] https://rspamd.com/doc/faq.html#resolver-setup

Allow bounce handling from mail.archlinux.org, the new email server