Multiple buffer overflows in the ESMTP service of Lotus Domino 5.0.2c and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via long (1) "RCPT TO," (2) "SAML FROM," or (3) "SOML FROM" commands.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2000-1033
http://archives.neohapsis.com/archives/bugtraq/2000-09/0093.html