[Watchdog] Use stackoverflow.com for DNS check

[Git] Ignore mail_plugins*
[Dovecot] Read mail_plugins from dynamically generated file
[Dovecot] Encrypt FTS
[Dovecot] Add break_imap_seach option to Solr
[Web] Add ability to send quarantine notification mails
[Web] Minor style fixes
[Web] Add new MAILBOX_DEFAULT_ATTRIBUTES (doc updates, anyone? :-( )
[Web] Use rcpt_smtp if rcpt_mime is not set
[Web] Other minor fixes

data/web/inc/vars.inc.php

@@ -131,6 +131,9 @@ $DOCKER_TIMEOUT = 60;
 // Anonymize IPs logged via UI
 $ANONYMIZE_IPS = true;
 
+// 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;
 
@@ -143,6 +146,9 @@ $MAILBOX_DEFAULT_ATTRIBUTES['force_pw_update'] = false;
 // Force password change on next login (only allows login to mailcow UI)
 $MAILBOX_DEFAULT_ATTRIBUTES['sogo_access'] = true;
 
+// Send notification when quarantine is not empty (never, hourly, daily, weekly)
+$MAILBOX_DEFAULT_ATTRIBUTES['quarantine_notification'] = 'never';
+
 // 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:';