编写安装配置mail服务脚本
【要求】：
自动完成安装postfix(根据提示输入主机名、域名并确定安装路径)、dovecot、squirrelmail，基本配置
【提示】：
此脚本是在lamp环境安装完成的前提下继续的操作（apache安装路径为/usr/local/apache/，可通过修改脚本起始位置httpd_dir变量值以替换成其他路径）
#!/bin/bash
httpd_dir="/usr/local/apache"
ls /etc/postfix &> /dev/null
if [ $? -ne 0 ]; then
yum -y install db*-devel cyrus-sasl-*
service sendmail stop &> /dev/null
chkconfig --level 35 sendmail off
grep postfix /etc/passwd &> /dev/null
if [ $? -ne 0 ];then
groupadd -g 1200 postdrop
groupadd -g 1000 postfix
useradd -M -u 1000 -g postfix -G postdrop -s /sbin/nologin postfix
fi
postfixball=`ls /usr/src/postfix*.gz`
tar zxf $postfixball -C /usr/src
dir=`ls -l /usr/src | grep ^d | grep postfix | awk '{print $7}'`
cd /usr/src/$dir
make makefiles 'CCARGS=-DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl' 'AUXLIBS=-L/usr/lib/sasl2 -lsasl2' && make && make install
cd /etc/postfix
postconf -n > tmp.file
mv /etc/postfix/main.cf /etc/postfix/main.cf.bak
mv tmp.file /etc/postfix/main.cf
ip=`ifconfig eth0 | grep "inet addr:" | awk '{print $2}' | awk -F: '{print $2}'`
read -p "myhostname of fqdn:" myhostname
read -p "mydomain of mail:" mydomain
echo "inet_interfaces=$ip,127.0.0.1
myhostname=$myhostname
mydomain=$mydomain
myorigin=$mydomain
mydestination=$mydomain,$myhostname
home_mailbox=Maildir/">> /etc/postfix/main.cf
postfix start
fi
ls /etc/dovecot &> /dev/null
if [ $? -ne 0 ]; then
yum -y install pam-devel
grep dovecot /etc/passwd &> /dev/null
if [ $? -ne 0 ]; then
useradd -M -s /sbin/nologin dovecot
useradd -M -s /sbin/nologin dovenull
fi
dovecotball=`ls /usr/src/dovecot*.gz`
tar zxf $dovecotball -C /usr/src/
dir=`ls -l /usr/src/ | grep ^d | grep dovecot |awk '{print $7}'`
cd /usr/src/$dir
./configure --sysconfdir=/etc && make && make install
cp doc/dovecot-initd.sh /etc/init.d/dovecot
chmod +x /etc/init.d/dovecot
chkconfig --add dovecot
chkconfig dovecot on
cp -r /usr/local/share/doc/dovecot/example-config/* /etc/dovecot
echo "#%PAM-1.0
auth required pam_nologin.so
auth include system-auth
account include system-auth
session include system-auth"> /etc/pam.d/dovecot
sed -i 's_include conf.d/\*.conf_include conf.d/10-auth.conf_' /etc/dovecot/dovecot.conf
echo "ssl=no
disable_plaintext_auth=no
mail_location=maildir:~/Maildir" >> /etc/dovecot/dovecot.conf
service dovecot start
fi
if [ ! -f /usr/lib/sasl2/smtpd.conf ]; then
echo "pwcheck_method: saslauthd" >/usr/lib/sasl2/smtpd.conf
service saslauthd start &> /dev/null
chkconfig --level 35 saslauthd on
echo "smtpd_sasl_auth_enable=yes
smtpd_sasl_security_options=noanonymous
mynetworks=127.0.0.1
smtpd_recipient_restrictions=
permit_mynetworks,
permit_sasl_authenticated,
reject_unauth_destination">> /etc/postfix/main.cf
postfix reload
fi
if [ ! -d $httpd_dir/htdocs/webmail ]; then
squirrelball=`ls /usr/src/squirrel*.gz`
tar zxf $squirrelball -C /usr/src
dir=`ls -l /usr/src | grep ^d |grep squirrel | awk '{print $7}'`
mv /usr/src/$dir $httpd_dir/htdocs/webmail
webmaildir=$httpd_dir/htdocs/webmail
tar zxf /usr/src/zh_CN*.gz -C $webmaildir
cd $httpd_dir/htdocs/webmail
mkdir -p data attach
chown -R daemon:daemon data attach
cp config/config_default.php config/config.php
sed -i '/^$data_dir =/ d' config/config.php
sed -i '/^$attachment_dir =/ d' config/config.php
sed -i '/^ $squirrelmail_default_language=/ d' config/config.php
sed -i '/^$default_charset =/ d' config/config.php
echo "\$data_dir = '$webmaildir/data';
\$attachment_dir = '$webmaildir/attach';
\$squirrelmail_default_language = 'zh_CN';
\$default_charset = 'zh_CN.UTF-8';">> config/config.php
fi
