Zitat von Jeff Huang <jbhu...@scut.edu.cn>:
Hi All.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?
Have a look for PGP or S/MIME. This is client side encryption and must therefore configured in the client settings, not postfix.
Regards Andreas