Mail server in Gattaca Server 2003 1.1.10.0 allows remote attackers to perform a denial of service (application crash) via a large number of connections to TCP port (1) 25 (SMTP) or (2) 110 (POP).
https://exchange.xforce.ibmcloud.com/vulnerabilities/16703
http://securitytracker.com/id?1010703
http://secunia.com/advisories/12071
http://members.lycos.co.uk/r34ct/main/Gattaca%20Server%202003.txt