CVE-2006-0129
Mail Management Agent (MAILMA) (aka Mail Management Server) in Rockliffe MailSite 7.0.3.1 and earlier generates different responses depending on whether or not a username is valid, which allows remote attackers to enumerate valid usernames via user requests to TCP port 106.
Date published : 2006-01-09
http://lists.grok.org.uk/pipermail/full-disclosure/2006-January/040970.html
http://zur.homelinux.com/Advisories/RockliffeMailsiteUserEnum.txt