Password Check Utility for Maddy

Features:

• Authenticates email accounts against the SQLite database used by Hostux panel
• Updates "last accessed" on a successful authentication

Configuration through environment variables:

• HOSTUX_EMAIL_DATABASE_SQLITE: required, path to the database containing the email addresses
• HOSTUX_EMAIL_CHECKPW_LOGFILE: if set, logs are written to the path indicated
• HOSTUX_LOCAL_DOMAINS: to complete $(local_domains) list (necessary for outbound DKIM signing, and w/ current maddy.conf.docker, for destination and source matching)

Testing

Maddy

Build the image:

podman build -t hostux/maddy:latest .

For maddy.conf:

$(hostname) = {env:MADDY_HOSTNAME}
$(primary_domain) = {env:MADDY_DOMAIN}
$(local_domains) = $(primary_domain)

tls off

auth.external hostux_auth {
    helper /bin/checkpw
    perdomain yes
    domains $(local_domains)
}

storage.imapsql local_mailboxes {
    driver sqlite3
    dsn imapsql.db
}

hostname $(hostname)

table.chain local_rewrites {
    optional_step regexp "(.+)\+(.+)@(.+)" "$1@$3"
    optional_step static {
        entry postmaster postmaster@$(primary_domain)
    }
    optional_step file /etc/maddy/aliases
}

msgpipeline local_routing {
    destination postmaster $(local_domains) {
        modify {
            replace_rcpt &local_rewrites
        }

        deliver_to &local_mailboxes
    }

    default_destination {
        reject 550 5.1.1 "User doesn't exist"
    }
}

smtp tcp://0.0.0.0:25 {
    limits {
        all rate 20 1s
        all concurrency 10
    }

    dmarc yes
    check {
        require_mx_record
        dkim
        spf
    }

    source $(local_domains) {
        reject 501 5.1.8 "Use Submission for outgoing SMTP"
    }
    default_source {
        destination postmaster $(local_domains) {
            deliver_to &local_routing
        }
        default_destination {
            reject 550 5.1.1 "User doesn't exist"
        }
    }
}

imap tcp://0.0.0.0:143 {
    auth &hostux_auth
    storage &local_mailboxes
}

podman volume create maddydata

podman run --rm \
  --name maddy \
  -e MADDY_HOSTNAME=mx.maddy.test \
  -e MADDY_DOMAIN=maddy.test \
  -e HOSTUX_EMAIL_DATABASE_SQLITE=/data/email-db/email.sqlite \
  -v maddydata:/data \
  -v email-db:/data/email-db/ \
  -p 143:143 \
  hostux/maddy:latest

podman run --rm -it -v maddydata:/data --entrypoint ash foxcpp/maddy:0.6

CLI Imap Client

pip install imap-cli
export PATH="$PATH:/home/louis_guidez76/.local/bin"

In ~/.config/imap-cli:

[imap]
hostname = localhost
username = louis@hostux.fr
password = ...
ssl = False

[display]
format_list =
    ID:         {mail_id}
    Flags:      {flags}
    From:       {from}
    To:         {to}
    Date:       {date}
    Subject:    {subject}
format_thread = {uid} {subject} <<< FROM {from}
format_status = {directory:>20} : {count:>5} Mails - {unseen:>5} Unseen - {recent:>5} Recent
limit = 10