misc_nixos-mailserver/mail-server/dovecot.nix

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# nixos-mailserver: a simple mail server
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# Copyright (C) 2016-2018 Robin Raymond
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#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>
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{ config, pkgs, lib, ... }:
with (import ./common.nix { inherit config; });
let
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cfg = config.mailserver;
# maildir in format "/${domain}/${user}"
dovecot_maildir = "maildir:${cfg.mailDirectory}/%d/%n";
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in
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{
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config = with cfg; lib.mkIf enable {
services.dovecot2 = {
enable = true;
enableImap = enableImap;
enablePop3 = enablePop3;
mailGroup = vmailGroupName;
mailUser = vmailUserName;
mailLocation = dovecot_maildir;
sslServerCert = certificatePath;
sslServerKey = keyPath;
enableLmtp = true;
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modules = [ pkgs.dovecot_pigeonhole ];
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protocols = [ "sieve" ];
sieveScripts = {
after = builtins.toFile "spam.sieve" ''
require "fileinto";
if header :is "X-Spam" "Yes" {
fileinto "Junk";
stop;
}
'';
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};
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extraConfig = ''
#Extra Config
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${lib.optionalString debug ''
mail_debug = yes
auth_debug = yes
verbose_ssl = yes
''}
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mail_access_groups = ${vmailGroupName}
ssl = required
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service lmtp {
unix_listener /var/lib/postfix/queue/private/dovecot-lmtp {
group = postfix
mode = 0600
user = postfix # TODO: < make variable
}
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}
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protocol lmtp {
mail_plugins = $mail_plugins sieve
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}
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service auth {
unix_listener /var/lib/postfix/queue/private/auth {
mode = 0660
user = postfix # TODO: < make variable
group = postfix # TODO: < make variable
}
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}
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auth_mechanisms = plain login
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namespace inbox {
inbox = yes
mailbox "Trash" {
auto = no
special_use = \Trash
}
mailbox "Junk" {
auto = subscribe
special_use = \Junk
}
mailbox "Drafts" {
auto = subscribe
special_use = \Drafts
}
mailbox "Sent" {
auto = subscribe
special_use = \Sent
}
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}
plugin {
sieve = file:/var/sieve/%u/scripts;active=/var/sieve/%u/active.sieve
sieve_default = file:/var/sieve/%u/default.sieve
sieve_default_name = default
}
lda_mailbox_autosubscribe = yes
lda_mailbox_autocreate = yes
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'';
};
};
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}