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{ lib, pkgs, config, name, ... }:
{
config = lib.mkIf config.myServices.mailRelay.enable {
secrets.keys = [
{
dest = "opensmtpd/creds";
user = "smtpd";
group = "smtpd";
permissions = "0400";
text = ''
eldiron ${name}:${config.hostEnv.ldap.password}
'';
}
];
users.users.smtpd.extraGroups = [ "keys" ];
services.opensmtpd = {
enable = true;
serverConfiguration = let
filter-rewrite-from = pkgs.runCommand "filter-rewrite-from.py" {
buildInputs = [ pkgs.python3 ];
} ''
cp ${./filter-rewrite-from.py} $out
patchShebangs $out
'';
in ''
table creds \
"${config.secrets.fullPaths."opensmtpd/creds"}"
# FIXME: filtering requires 6.6, uncomment following lines when
# upgrading
# filter "fixfrom" \
# proc-exec "${filter-rewrite-from} ${name}@immae.eu"
# listen on socket filter "fixfrom"
action "relay-rewrite-from" relay \
helo ${config.hostEnv.fqdn} \
host smtp+tls://eldiron@eldiron.immae.eu:587 \
auth <creds> \
mail-from ${name}@immae.eu
action "relay" relay \
helo ${config.hostEnv.fqdn} \
host smtp+tls://eldiron@eldiron.immae.eu:587 \
auth <creds>
match for any !mail-from "@immae.eu" action "relay-rewrite-from"
match for any mail-from "@immae.eu" action "relay"
'';
};
environment.systemPackages = [ config.services.opensmtpd.package ];
services.mail.sendmailSetuidWrapper = {
program = "sendmail";
source = "${config.services.opensmtpd.package}/bin/smtpctl";
setuid = false;
setgid = false;
};
security.wrappers.mailq = {
program = "mailq";
source = "${config.services.opensmtpd.package}/bin/smtpctl";
setuid = false;
setgid = false;
};
};
}
|
