On Fri, Jan 25, 2013 at 12:37:06PM +0800, horseriver wrote: > I have already read this man page ,and I am reaching on these points all. > > My system now has one mail delivery agent named exim4.
Umm, no. Have a look at: http://www.tldp.org/HOWTO/Mail-Administrator-HOWTO-3.html http://www.unix.com/unix-dummies-questions-answers/ http://dsl.org/cookbook/cookbook_38.html http://lowfatlinux.com/linux-read-email.html http://lowfatlinux.com/linux-send-email.html http://www.linuxtopia.org/HowToGuides/linux_email_setup_guide/linux_email_intro1.html http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch21_:_Configuring_Linux_Mail_Servers http://docstore.mik.ua/orelly/linux/run/ch16_02.htm http://www.northernjourney.com/opensource/newbies/newb024.html http://www.linux.org/article/view/mail-servers http://wiki2.dovecot.org/MailServerOverview http://en.wikipedia.org/wiki/Mail_delivery_agent etc... etc... etc... -- "If you're not careful, the newspapers will have you hating the people who are being oppressed, and loving the people who are doing the oppressing." --- Malcolm X