Property	Optional?	Description
maven.linkcheck.cache	Yes	Determines where the cache for the linkchecking is stored. Default value is ${maven.build.dir}/linkcheck/linkcheck.cache. This means that a clean build deletes the cache. If you have an extremely large document tree this can have a negative effect on performance.
maven.linkcheck.failonerror	Yes	Determines whether the build should fail on broken links or not. Defaults to false.
maven.linkcheck.exclude	Yes	List of urls to exclude from check, delimited by comma, space or tab. Those urls in files that start with one of the excluded urls will be ignored. Defaults to pom.repository.url.