"Jeff Huang" <jbhu...@scut.edu.cn> wrote: > I found the email files that are stored under the Maildir are clearly > code. > > If I am the administrator of the system,I can see all user's email > contents. > > Is there a method to encrypt the email files so that the administrator > can't see the email contents,even if he can read the files?
I think you want public key encryption (one key to encrypt, another to decrypt) at receiving server before delivery to local mailbox/maildir. It can be done e.g. by making MTA (posfix) deliver to local mailboxes using procmail and calling "custom encryption script/program" from ~/.procmailrc. *BUT* system administrator (root) can get access to email before it is encrypted so MUA-MUA (sender's email client-recipient's email client) encryption it much safer/secure. -- [pl>en: Andrew] Andrzej Adam Filip : a...@onet.eu I found Rome a city of bricks and left it a city of marble. -- Augustus Caesar
