Trusted Solaris User's Guide

Enforcing MAC for Email Transactions

Trusted Solaris enforces mandatory access control whenever you use email. When you send email, Trusted Solaris prevents users with insufficiently high clearance from receiving it. On the receiving end, email is sorted by the sensitivity labels within your account range. Your current sensitivity label must be at the same level as the email message you intend to read; otherwise you must change your current sensitivity label.