To install and configure Email server, there are two things need to be done.The first things is to install and configure the DNS servr. The second is to install and configure Email server.
We usually use the BIND for the DNS server on the Redhat server and use the James and sendmail for the email server.
Step 1, install the DNS server on Redhat.
1. Get the bind from the website, www.bind.com.
2. upload the installation file to the server Redhat and use tar -zxvf *.gz to extract the file.
3. The file was needed to make install.
./configure --prefix=/usr/local/named # this tell the system the path to install
make #precompile
make install # make install.
4.Since now, the installation were finished and the configure can be started.
5.Add the user and group bind.
groupadd bind
useradd -g bind -d /usr/local/named -s /sbin/nologin bind
6.configure the DNS
cd /usr/local/named/etc
/usr/local/named/sbin/rndc-confgen > rndc.conf
cat rndc.conf > rndc.key
chmod 777 /usr/local/named/var
tail -10 rndc.conf | head -9 | sed s/#\ //g > named.conf
vi named.conf
添加下面内容(
#################
options {
directory "/usr/local/named/var";
pid-file "named.pid";
};
zone "." IN {
type hint;
file "named.root";
};
zone "localhost" IN {
type master;
file "localhost.zone";
allow-update { none; };
};
zone "0.0.127.in-addr.arpa" IN {
type master;
file "named.local";
allow-update { none; };
};
zone "test.com" IN {
type master;
file "test.com.zone";
allow-update { none; };
};
zone "1.168.192.in-addr.arpa" in {
type master;
file "test.com.rev";
allow-update { none; };
};
########################
cd /usr/local/named/var
1:named.root
dig @a.root-servers.net . ns > named.root
2:localhost.zone
##########
$TTL 86400
$ORIGIN localhost.
@ 1D IN SOA @ root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
1D IN NS @
1D IN A 127.0.0.1
#############
3:named.local
###############
$TTL 86400
@ IN SOA localhost. root.localhost. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS localhost.
1 IN PTR localhost.
####################
4:test.com.zone
############
$TTL 86400 ; 1 day
@ IN SOA ns1.test.com. root.test.com. (
2008050122 ; serial
28800 ; refresh (8 hours)
7200 ; retry (2 hours)
604800 ; expire (1 week)
86400 ; minimum (1 day)
)
NS ns1.test.com.
A 192.168.1.168
MX 10 mail.test.com.
www A 192.168.1.168
mail A 192.168.1.168
ns1 A 192.168.1.168
#########################
5:test.com.rev
#############
$TTL 86400
@ IN SOA ns1.test.com. root.test.com.(
20031001;
7200;
3600;
43200;
86400);
@ IN NS ns1.test.com.
168 IN PTR ns1.test.com.
##############
7 create the service
vi /etc/rc.d/init.d/named
#!/bin/bash
# named a network name service.
# chkconfig: 345 35 75
# description: a name server
if [ `id -u` -ne 0 ]
then
echo "ERROR:For bind to port 53,must run as root."
exit 1
fi
case "$1" in
start)
if [ -x /usr/local/named/sbin/named ]; then
/usr/local/named/sbin/named -c /usr/local/named/etc/named.conf -u bind && echo . && echo 'BIND9 server started'
fi
;;
stop)
kill `cat /usr/local/named/var/named.pid` && echo . && echo 'BIND9 server stopped'
;;
restart)
echo .
echo "Restart BIND9 server"
$0 stop
sleep 10
$0 start
;;
reload)
/usr/local/named/sbin/rndc reload
;;
status)
/usr/local/named/sbin/rndc status
;;
*)
echo "$0 start | stop | restart |reload |status"
;;
esac
->chmod 755 /etc/rc.d/init.d/named
->chkconfig --add named
->service named start
8 test the service
/usr/local/named/sbin/named -g
You can use the script to test the server and it will print the start log.
start the server
/usr/local/named/sbin/named -c /usr/local/named/etc/named.conf -u bind &
view the status of the server
/usr/local/named/sbin/rndc status
start teh server
service named restart
edit /etc/resolv.conf
change the dns server to local pc.
we can nslookup to test the dns server.
eg: nslookup www.polisy.com.sg
Step 2, Install and configure the james.
James is very easy to install.
1. After upload the installation file,we can use tar -zxvf .gz to extract the tar file.
eg: tar -zxvf *.gz -C james #extract the gz file to james.
2. Add the JAVA_HOME to the script $JAMES_HOME/bin/run.sh
# add JAVA_HOME
JAVA_HOME=/opt/jdk1.6.0_13
export JAVA_HOME
3. Will start the james.
When start the james ,it will check if there is another mail server started on the redhat,so we need to close other email server
->service sendmail stop
->sh run.sh
If there is no problem, we can see the message below.
[root@localhost bin]# sh run.sh
Using PHOENIX_HOME: /opt/james/james-2.3.1
Using PHOENIX_TMPDIR: /opt/james/james-2.3.1/temp
Using JAVA_HOME: /opt/jdk1.6.0_13
Running Phoenix:
Phoenix 4.2
James Mail Server 2.3.1
Remote Manager Service started plain:4555
POP3 Service started plain:110
SMTP Service started plain:25
NNTP Service started plain:119
FetchMail Disabled
4 modify the /SAR-INF/config
<postmaster>Postmaster@test.com</postmaster>
<servernames autodetect="false" autodetectIP="true">
<!-- CONFIRM? -->
<servername>test.com</servername>
</servernames>
5. restart the serer sh run.sh
6. add user and password
telnet 127.0.0.1 4555
adduser usr pwd
Step 3. create the start and stop server script for DNS and james server.
vi startEmailserver
#! /bin/sh
service sendmail stop
service named start
sh /opt/james/james-2.3.1/bin/run.sh &
vi stop Email server
#! /bin/sh
# kill james pid
pidlist=`ps -ef|grep jame | grep -v "grep"|awk '{print $2}'`
#ps -u $USER|grep "java"|grep -v "grep"
echo "email server Id list :$pidlist"
if [ "$pidlist" = "" ]
then
echo "no email server pid alive"
else
for pid in ${pidlist}
{
kill -9 $pid
echo "KILL $pid:"
echo "service stop success"
}
fi
#stop DNS server
pidlist=`ps -ef|grep named | grep -v "grep"|awk '{print $2}'`
#ps -u $USER|grep "java"|grep -v "grep"
echo "DNS server Id list :$pidlist"
if [ "$pidlist" = "" ]
then
echo "no DNS server pid alive"
else
for pid in ${pidlist}
{
kill -9 $pid
echo "KILL $pid:"
echo "service stop success"
}
fi
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