hello all
i have problem on my E-mail server postfix
the E-mail users account can send E-mail message to another user from their account, but the problem they can insert on the sender name fake name like spam or unauthorized name for example can send email to other users from its account but the sender name will be which is nonexistence user name

how i can prevent my users to do this

please any help

thank you

Note: I'm a noobie, but am learning and want very much to know more. I am also
using Debian Etch on my PPC G4 Digital Audio Mac with an internal IDE drive.

My goal: I have a OWC/Newer Tech firewire(400) 320G hard drive and I would like to put 3
bootable sections on this drive. The first would be a bootable section for a
Linux distro. The second would be a 100G portion which may be a backup clone
for a Linux distro or another Linux distro. The third and last portion would be
a 100G bootable MacOS (Tiger) system.

After a lot of investigation into how to arrange the partitions, I used the Mac
DiskUtility to "partition" the drive into two parts. The first being reserved
for Linux(200G of free space) and the second for MacOSX. I then used mac-fdisk (in Debian)

hello there i hace this problem... i installed Debian on my laptop dv6422la and when that come to the end i entered into the GRUB panel then i selected DEBIAN and it freeze when it comes to the Desktop... its like a white smoke turning of... (like shuted down) is ther any solution? is it the Video Card ?

hola a todos tengo este problema... instalé Debian en mi laptop dv6422la y cuando llega al final entre al menu de GRUB, despues seleccioné DEBIAN y todo se congelo haciendo parecer una pantalla difuminada color blanco poniendose como en modo de apagado poco a poco... ¿hay solución? es de la tarjeta de video

How very different is the feel of using Solaris (as ordinary user) in respect to Linux?