144 lines
3.8 KiB
Nix
144 lines
3.8 KiB
Nix
{ config, pkgs, ... }:
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{
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networking.firewall.interfaces."zt+".allowedTCPPorts = [ 25 ]; # smtp with other hosts
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environment.systemPackages = [ pkgs.deltachat-desktop ];
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services.maddy =
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let
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domain = "${config.clanCore.machineName}.local";
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in
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{
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enable = true;
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primaryDomain = domain;
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config = ''
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# Minimal configuration with TLS disabled, adapted from upstream example
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# configuration here https://github.com/foxcpp/maddy/blob/master/maddy.conf
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# Do not use this in unencrypted networks!
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auth.pass_table local_authdb {
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table sql_table {
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driver sqlite3
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dsn credentials.db
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table_name passwords
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}
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}
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storage.imapsql local_mailboxes {
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driver sqlite3
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dsn imapsql.db
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}
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table.chain local_rewrites {
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optional_step regexp "(.+)\+(.+)@(.+)" "$1@$3"
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optional_step static {
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entry postmaster postmaster@$(primary_domain)
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}
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optional_step file /etc/maddy/aliases
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}
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msgpipeline local_routing {
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destination postmaster $(local_domains) {
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modify {
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replace_rcpt &local_rewrites
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}
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deliver_to &local_mailboxes
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}
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default_destination {
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reject 550 5.1.1 "User doesn't exist"
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}
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}
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smtp tcp://[::]:25 {
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limits {
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all rate 20 1s
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all concurrency 10
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}
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dmarc yes
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check {
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require_mx_record
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dkim
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spf
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}
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source $(local_domains) {
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reject 501 5.1.8 "Use Submission for outgoing SMTP"
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}
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default_source {
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destination postmaster $(local_domains) {
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deliver_to &local_routing
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}
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default_destination {
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reject 550 5.1.1 "User doesn't exist"
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}
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}
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}
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submission tcp://[::1]:587 {
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limits {
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all rate 50 1s
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}
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auth &local_authdb
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source $(local_domains) {
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check {
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authorize_sender {
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prepare_email &local_rewrites
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user_to_email identity
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}
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}
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destination postmaster $(local_domains) {
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deliver_to &local_routing
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}
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default_destination {
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modify {
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dkim $(primary_domain) $(local_domains) default
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}
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deliver_to &remote_queue
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}
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}
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default_source {
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reject 501 5.1.8 "Non-local sender domain"
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}
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}
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target.remote outbound_delivery {
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limits {
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destination rate 20 1s
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destination concurrency 10
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}
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mx_auth {
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dane
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mtasts {
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cache fs
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fs_dir mtasts_cache/
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}
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local_policy {
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min_tls_level encrypted
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min_mx_level none
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}
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}
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}
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target.queue remote_queue {
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target &outbound_delivery
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autogenerated_msg_domain $(primary_domain)
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bounce {
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destination postmaster $(local_domains) {
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deliver_to &local_routing
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}
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default_destination {
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reject 550 5.0.0 "Refusing to send DSNs to non-local addresses"
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}
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}
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}
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imap tcp://[::1]:143 {
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auth &local_authdb
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storage &local_mailboxes
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}
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'';
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ensureAccounts = [ "user@${domain}" ];
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ensureCredentials = {
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"user@${domain}".passwordFile = pkgs.writeText "dummy" "foobar";
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};
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};
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}
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