Hi UFHH01,
1. We are on Windows server and /var/www/vhosts/system/DOMAIN.COM/logs/ is not existing.
2. In error logs is nothing, hence my question.
2016-06-12 20:54:25 212.35.24.137 200 POST /wp-login.php - HTTP/1.1
http://domain.ch/wp-login.php Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 2.67 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET / - HTTP/1.1
http://domain.ch/wp-login.php Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 10.2 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET /wp-content/themes/twentysixteen/genericons/genericons.css ver=3.4.1 HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 27.9 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET /wp-content/themes/twentysixteen/js/skip-link-focus-fix.js ver=20160412 HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 1.32 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET /wp-includes/js/jquery/jquery-migrate.min.js ver=1.4.0 HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 9.7 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET /wp-content/themes/twentysixteen/js/functions.js ver=20160412 HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 6.94 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET /wp-includes/js/wp-embed.min.js ver=4.5.2 HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 1.65 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET /wp-includes/js/wp-emoji-release.min.js ver=4.5.2 HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 9.9 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET /wp-content/themes/twentysixteen/style.css ver=4.5.2 HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 67.6 K IIS access
2016-06-12 20:54:40 212.35.24.137 200 GET /wp-includes/js/jquery/jquery.js ver=1.12.3 HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 95.2 K IIS access
2016-06-12 20:54:43 212.35.24.137 200 GET /wp-login.php - HTTP/1.1
http://domain.ch/ Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 2.67 K IIS access
2016-06-12 20:55:11 212.35.24.137 200 POST /wp-login.php - HTTP/1.1
http://domain.ch/wp-login.php Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0 2.67 K IIS access
Regards,
Mike