mailcow/data/web/inc/vars.inc.php

<?php
error_reporting(E_ERROR);
//error_reporting(E_ALL);

/*
PLEASE USE THE FILE "vars.local.inc.php" TO OVERWRITE SETTINGS AND MAKE THEM PERSISTENT!
This file will be reset on upgrades.
*/

// SQL database connection variables
$database_type = 'mysql';
$database_sock = '/var/run/mysqld/mysqld.sock';
$database_host = 'mysql';
$database_user = getenv('DBUSER');
$database_pass = getenv('DBPASS');
$database_name = getenv('DBNAME');

// Other variables
$mailcow_hostname = getenv('MAILCOW_HOSTNAME');
$default_pass_scheme = getenv('MAILCOW_PASS_SCHEME');

// Autodiscover settings
// ===
// Auto-detect HTTPS port =>
$https_port = strpos($_SERVER['HTTP_HOST'], ':');
if ($https_port === FALSE) {
  $https_port = 443;
} else {
  $https_port = substr($_SERVER['HTTP_HOST'], $https_port+1);
}

// Alternatively select port here =>
//$https_port = 1234;
// Other settings =>
$autodiscover_config = array(
  // General autodiscover service type: "activesync" or "imap"
  // emClient uses autodiscover, but does not support ActiveSync. mailcow excludes emClient from ActiveSync.
  // With SOGo disabled, the type will always fallback to imap. CalDAV and CardDAV will be excluded, too.
  'autodiscoverType' => 'activesync',
  // If autodiscoverType => activesync, also use ActiveSync (EAS) for Outlook desktop clients (>= Outlook 2013 on Windows)
  // Outlook for Mac does not support ActiveSync
  'useEASforOutlook' => 'no',
  // Please don't use STARTTLS-enabled service ports in the "port" variable.
  // The autodiscover service will always point to SMTPS and IMAPS (TLS-wrapped services).
  // The autoconfig service will additionally announce the STARTTLS-enabled ports, specified in the "tlsport" variable.
  'imap' => array(
    'server' => $mailcow_hostname,
    'port' => (int)filter_var(substr(getenv('IMAPS_PORT'), strrpos(getenv('IMAPS_PORT'), ':')), FILTER_SANITIZE_NUMBER_INT),
    'tlsport' => (int)filter_var(substr(getenv('POP_PORT'), strrpos(getenv('IMAP_PORT'), ':')), FILTER_SANITIZE_NUMBER_INT)
  ),
  'pop3' => array(
    'server' => $mailcow_hostname,
    'port' => (int)filter_var(substr(getenv('POPS_PORT'), strrpos(getenv('POPS_PORT'), ':')), FILTER_SANITIZE_NUMBER_INT),
    'tlsport' => (int)filter_var(substr(getenv('POP_PORT'), strrpos(getenv('POP_PORT'), ':')), FILTER_SANITIZE_NUMBER_INT)
  ),
  'smtp' => array(
    'server' => $mailcow_hostname,
    'port' => (int)filter_var(substr(getenv('SMTPS_PORT'), strrpos(getenv('SMTPS_PORT'), ':')), FILTER_SANITIZE_NUMBER_INT),
    'tlsport' => (int)filter_var(substr(getenv('SUBMISSION_PORT'), strrpos(getenv('SUBMISSION_PORT'), ':')), FILTER_SANITIZE_NUMBER_INT)
  ),
  'activesync' => array(
    'url' => 'https://' . $mailcow_hostname . ($https_port == 443 ? '' : ':' . $https_port) . '/Microsoft-Server-ActiveSync',
  ),
  'caldav' => array(
    'server' => $mailcow_hostname,
    'port' => $https_port,
  ),
  'carddav' => array(
    'server' => $mailcow_hostname,
    'port' => $https_port,
  ),
);

// If false, we will use DEFAULT_LANG
// Uses HTTP_ACCEPT_LANGUAGE header
$DETECT_LANGUAGE = true;

// Change default language
$DEFAULT_LANG = 'en';

// Available languages
// https://www.iso.org/obp/ui/#search
// https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
$AVAILABLE_LANGUAGES = array(
  'cs' => 'Čeština (Czech)',
  'da' => 'Danish (Dansk)',
  'de' => 'Deutsch (German)',
  'en' => 'English',
  'es' => 'Español (Spanish)',
  'fi' => 'Suomi (Finish)',
  'fr' => 'Français (French)',
  'hu' => 'Magyar (Hungarian)',
  'it' => 'Italiano (Italian)',
  'ko' => '한국어 (Korean)',
  'lv' => 'latviešu (Latvian)',
  'nl' => 'Nederlands (Dutch)',
  'pl' => 'Język Polski (Polish)',
  'pt' => 'Português (Portuguese)',
  'ro' => 'Română (Romanian)',
  'ru' => 'Pусский (Russian)',
  'sk' => 'Slovenčina (Slovak)',
  'sv' => 'Svenska (Swedish)',
  'zh' => '中文 (Chinese)'
);

// Change theme (default: lumen)
// Needs to be one of those: cerulean, cosmo, cyborg, darkly, flatly, journal, lumen, paper, readable, sandstone,
// simplex, slate, spacelab, superhero, united, yeti
// See https://bootswatch.com/
// WARNING: Only lumen is loaded locally. Enabling any other theme, will download external sources.
$DEFAULT_THEME = 'lumen';

// Show DKIM private keys - false by default
$SHOW_DKIM_PRIV_KEYS = false;

// mailcow Apps - buttons on login screen
$MAILCOW_APPS = array(
  array(
    'name' => 'Webmail',
    'link' => '/SOGo/',
  )
);

// Rows until pagination begins
$PAGINATION_SIZE = 20;

// Default number of rows/lines to display (log table)
$LOG_LINES = 1000;

// Rows until pagination begins (log table)
$LOG_PAGINATION_SIZE = 50;

// Session lifetime in seconds
$SESSION_LIFETIME = 10800;

// Label for OTP devices
$OTP_LABEL = "mailcow UI";

// How long to wait (in s) for cURL Docker requests
$DOCKER_TIMEOUT = 60;

// Split DKIM key notation (bind format)
$SPLIT_DKIM_255 = false;

// OAuth2 settings
$REFRESH_TOKEN_LIFETIME = 2678400;
$ACCESS_TOKEN_LIFETIME = 86400;
// Logout from mailcow after first OAuth2 session profile request
$OAUTH2_FORGET_SESSION_AFTER_LOGIN = false;

// MAILBOX_DEFAULT_ATTRIBUTES define default attributes for new mailboxes
// These settings will not change existing mailboxes

// Force incoming TLS for new mailboxes by default
$MAILBOX_DEFAULT_ATTRIBUTES['tls_enforce_in'] = false;

// Force outgoing TLS for new mailboxes by default
$MAILBOX_DEFAULT_ATTRIBUTES['tls_enforce_out'] = false;

// Force password change on next login (only allows login to mailcow UI)
$MAILBOX_DEFAULT_ATTRIBUTES['force_pw_update'] = false;

// Enable SOGo access (set to false to disable access by default)
$MAILBOX_DEFAULT_ATTRIBUTES['sogo_access'] = true;

// Send notification when quarantine is not empty (never, hourly, daily, weekly)
$MAILBOX_DEFAULT_ATTRIBUTES['quarantine_notification'] = 'hourly';

// Mailbox has IMAP access by default
$MAILBOX_DEFAULT_ATTRIBUTES['imap_access'] = true;

// Mailbox has POP3 access by default
$MAILBOX_DEFAULT_ATTRIBUTES['pop3_access'] = true;

// Mailbox has SMTP access by default
$MAILBOX_DEFAULT_ATTRIBUTES['smtp_access'] = true;

// Mailbox receives notifications about...
// "add_header" - mail that was put into the Junk folder
// "reject" - mail that was rejected
// "all" - mail that was rejected and put into the Junk folder
$MAILBOX_DEFAULT_ATTRIBUTES['quarantine_category'] = 'reject';

// Default mailbox format, should not be changed unless you know exactly, what you do, keep the trailing ":"
// Check dovecot.conf for further changes (e.g. shared namespace)
$MAILBOX_DEFAULT_ATTRIBUTES['mailbox_format'] = 'maildir:';

// Show last IMAP and POP3 logins
$SHOW_LAST_LOGIN = true;

// UV flag handling in FIDO2/WebAuthn - defaults to false to allow iOS logins
// true = required
// false = preferred
// string 'required' 'preferred' 'discouraged'
$FIDO2_UV_FLAG_REGISTER = 'preferred';
$FIDO2_UV_FLAG_LOGIN = 'preferred'; // iOS ignores the key via NFC if required - known issue
$FIDO2_USER_PRESENT_FLAG = true;
$FIDO2_FORMATS = array('apple', 'android-key', 'android-safetynet', 'fido-u2f', 'none', 'packed', 'tpm');

// Set visible Rspamd maps in mailcow UI, do not change unless you know what you are doing
$RSPAMD_MAPS = array(
  'regex' => array(
    'Header-From: Blacklist' => 'global_mime_from_blacklist.map',
    'Header-From: Whitelist' => 'global_mime_from_whitelist.map',
    'Envelope Sender Blacklist' => 'global_smtp_from_blacklist.map',
    'Envelope Sender Whitelist' => 'global_smtp_from_whitelist.map',
    'Recipient Blacklist' => 'global_rcpt_blacklist.map',
    'Recipient Whitelist' => 'global_rcpt_whitelist.map',
    'Fishy TLDS (only fired in combination with bad words)' => 'fishy_tlds.map',
    'Bad Words (only fired in combination with fishy TLDs)' => 'bad_words.map',
    'Bad Words DE (only fired in combination with fishy TLDs)' => 'bad_words_de.map',
    'Bad Languages' => 'bad_languages.map',
    'Bulk Mail Headers' => 'bulk_header.map',
    'Bad (Junk) Mail Headers' => 'bad_header.map',
    'Monitoring Hosts' => 'monitoring_nolog.map'
  )
);