Robots.txt для MODX, правильно!
Пример правильного robots.txt для MODx Evo
User-agent: *
Disallow: /assets/cache/
Disallow: /assets/docs/
Disallow: /assets/export/
Disallow: /assets/import/
Disallow: /assets/modules/
Disallow: /assets/plugins/
Disallow: /assets/snippets/
Disallow: /install/
Disallow: /manager/
Disallow: /?
Disallow: /*?
Disallow: /index.php
Host: <span>sitename.com</span>
Sitemap:http://sitename.com/sitemap.xml
Пример правильного robots.txt для MODx Revo
User-agent: *
Disallow: /manager/
Disallow: /assets/components/
Disallow: /core/
Disallow: /connectors/
Disallow: /index.php
Disallow: *?
Host: <span>sitename.com</span>
Sitemap: http://sitename.com/sitemap.xml