Trying to scan a SharePoint server using the DLP Solution crawler; the scan fails with an error "the DLP Solution cannot be found on the Web Front End server."
There are two main items that can cause this issue:
For item 1, you need to verify the DLP Solution has been installed on the Web Front End Server. If the installer has been run, then you must verify it is installed correctly. Follow these steps:
If you have verified the solution is installed correctly, then the second test would be done by connection to http://<your-site-name>/_vti_bin/sharepointConnector.asmx. eg. If you are scanning "http://www.sharepoint.com:<your site port>/sites/<site name>/<subsite>", you can enter "http://www.sharepoint.com:<your site port>/sites/<site name>/<subsite>/_vti_bin/sharepointConnector.asmx" in the browser and verify you get the web service operations list in reply. If you do, it is installed correctly. If you don't, then the issue could be the second item.
For Item 2, if you are trying to scan a server by simply using URL http://<sharepoint>/site, this will fail. You MUST include the port for the server. eg. http://<sharepoint>:<your site port>/site, or just http://<sharepoint>:<your site port> if you want to scan the whole server.