Applying Labels to Email

All email messages have labels in the Trusted Solaris environment. The underlying tool sendmail(1M) does not deliver mail to a user outside of the user's account range. Use the -p option in the sendmail.cf file to provide for out-of-range mail. Furthermore, the restrictmailq option in the sendmail.cf file is set by default to restrict users from listing mail sent by other users. Only users in the same group as the mail queue can list jobs in the queue. Email operations make use of multilabel directories both for messages queued prior to delivery and for storage of incoming messages. Users are notified separately about mail received at each label in their account range and in the range of any role they have assumed. In addition, an option exists to promote email from administrators from ADMIN_LOW to the user's minimum label.