Article ID: 970113 - View products that this article applies to.
If the subject of a discussion board item contains a period (.), the item does not index when a crawl is run against the site. The following error message appears in the crawl log:
Content for this URL is excluded by the server because of a no-index attribute.
To resolve this issue, apply both the following updates:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.