Lotus Domino R5 prior to 5.0.7 allows a remote attacker to create a denial of service via repeated (>400) URL requests for DOS devices.
https://exchange.xforce.ibmcloud.com/vulnerabilities/6348
https://euvd.enisa.europa.eu/vulnerability/EUVD-2001-0593
http://archives.neohapsis.com/archives/bugtraq/2001-04/0174.html