5.5 Trusted Users

Sendmail has trusted users who can perform certain mail actions not permitted to the hoi polloi. Depending on your point of view, qmail either trusts all users or no users. Each user has full control over his own files and deliveries, but no user has any special ability to masquerade as others, run programs, or anything else. If a sendmail setup depends on trusted users (not many do), the setup must be redesigned to work with qmail.