This article provides information related to configuring Internet Information Services (IIS) to use W3C logging.
Internet Information Services (IIS) supports writing logs using the W3C format. This can be done for the WWW, FTP and SMTP services in IIS. These logs provide information on user and server activity. GFI EventsManager can then be configured to collect, process and archive these logs. Alerts can be generated when specific logging is encountered.
Refer to this Microsoft knowledge base article to enable logging in Internet Information Services (IIS).