how to setup a smtp-relay-only server with maddy

[ermazi]

how to setup a smtp-relay-only server with maddy?

[foxcpp]

Using a configuration like this:

$(hostname) = example.org
$(primary_domain) = example.org
$(local_domains) = $(primary_domain)

tls file /etc/maddy/certs/$(hostname)/fullchain.pem /etc/maddy/certs/$(hostname)/privkey.pem

hostname $(hostname)

submission tcp://0.0.0.0:2525 {
    auth pass_table {
        table static {
            entry relay-client "bcrypt:$2a$10$lmsEQZXn2iWQODyGHQDrb.Sc1.6OQTVUDvXks6uREL4AOoIdZ5tYm" 
            # generate password hash using 'maddyctl hash' 
        }
    }
    deliver_to &outbound_delivery
}

target.remote outbound_delivery {
    limits {
        # Up to 20 msgs/sec across max. 10 SMTP connections
        # for each recipient domain.
        destination rate 20 1s
        destination concurrency 10
    }
    mx_auth {
        dane
        mtasts {
            cache fs
            fs_dir mtasts_cache/
        }
        local_policy {
            min_tls_level encrypted
            min_mx_level none
        }
    }
}