[root@ns1 root]# vi /etc/postfix/main.cf

myhostname = ns1.errorz.net
mydomain = errorz.net
myorigin = $mydomain
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain $mydomain
unknown_local_recipient_reject_code = 550
#unknown_local_recipient_reject_code = 450
mynetworks = 127.0.0.0/8, 192.168.0.0/24, check_client_access hash:/etc/mail/dracd
relay_domains = $mydestination
alias_maps = hash:/etc/postfix/aliases
alias_database = hash:/etc/postfix/aliases
home_mailbox = Maildir/
smtpd_banner = $myhostname ESMTP unknown
#mail_spool_directory = /var/spool/mail
#mailbox_command = /some/where/procmail -a "$EXTENSION"
allow_percent_hack = yes

Esc :wq
[root@ns1 root]# /etc/init.d/postfix restart
[root@ns1 root]# rpm -e qpopper
[root@ns1 root]# rpm -e imap
[root@ns1 root]# apt-get install courier-authlib

[root@ns1 root]# ls
courier-imap-4.0.3-0vl1drac.i386.rpm　 anaconda-ks.cfg
dracd-1.12-0vl4courier.i386.rpm

[root@ns1 root]# rpm -Uhv courier-imap-4.0.3-0vl1drac.i386.rpm
[root@ns1 root]# rpm -Uhv dracd-1.12-0vl4courier.i386.rpm
[root@ns1 root]# /etc/init.d/portmap start
[root@ns1 root]# /etc/init.d/dracd start
[root@ns1 root]# /etc/init.d/courier-imap start
[root@ns1 root]# /etc/init.d/courier-authlib start
[root@ns1 root]# vi /usr/sbin/rc.dracd

/usr/sbin/rpc.dracd -i -e 10 &

Esc :wq
[root@ns1 root]# ps axw |grep drac
839 ? 　S 　0:00 /usr/sbin/rpc.dracd -i -e 10
1108 ? 　S 　0:00 /usr/sbin/rpc.dracd -i -e 10
[root@ns1 root]# su - camel
[camel@ns1 camel]$ /usr/sbin/testdrac localhost 192.168.0.2
[camel@ns1 camel]$ db_dump -p /etc/mail/dracd.db

VERSION=3
format=print
type=hash
h_nelem=1
db_pagesize=512
HEADER=END
192.168.0.2
12332233233413
DATA=END

[camel@ns1 camel]$ mail camel
Subject: test
test
.
Cc:

[camel@ns1 camel]$