Raspberry Pi 获取公网地址

1>: 安装配置postfix

# apt-get install postfix   (安装postfix)
或:
# aptitude install postfix

# echo '' >/etc/hostname   (修改主机名)
# echo 'X.X.X.X  www' >> /etc/hosts
# echo 'X.X.X.X ftp.kotzu.org ftp' >> /etc/hosts


# vim /etc/postfix/main.cf
myhostname =             (主机名FQDN)
alias_maps = hash:/etc/aliases          
alias_database = hash:/etc/aliases
myorigin = kotzu.org                    (发件人地址)
mydestination = , localhost.localdomain    (允许收件的主机)
relayhost =                       (由于是非公网domain,需要由上游ISP MTA帮忙送信,置空即可!)
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 hash:/etc/postfix/access    (只允许这些地址使用postfix)
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4
relay_domains = kotzu.org, localhost
:wq

# vim /etc/postfix/access
.kotzu.org  OK            (允许此domain使用postfix)
X.X.X.	     REJECT        (拒绝X.X.X.0/24使用postfix)
:wq
# postalias hash:/etc/aliases        (重新生成)
# postmap hash:/etc/postfix/access

# /etc/init.d/postfix reload  (重新加载配置文件)
# /etc/init.d/postfix check   (检查 postfix 相关的配置文件)
# /etc/init.d/postfix start   (运行 postfix 服务)
# /etc/init.d/postfix stop    (停止 postfix 服务)

# /usr/sbin/postqueue -p        (查看邮件队列排队的邮件)
或:
# mailq

# /etc/init.d/postfix flush   (强制将目前正在邮件队列排队的邮件寄出)

2>: 自动获取公网地址

# vim /usr/sbin/getPubIP.sh        (编写脚本取得公网IP并mail至相关邮箱)
#!/bin/sh
#Program: save as /usr/sbin/getPubIP.sh
#
DATE=$(date +'%Y-%m-%d %H:%M:%S')
curl ifconfig.me/ip > getip.txt 2>&1
echo $DATE >> getip.txt
tail -2 getip.txt| mail -s 'Today's Public IP Addr' [e-mail]
:wq

3>: 配置 routine

# echo '07 */1 * * * root /usr/sbin/getPubIP.sh' >> /etc/crontab (每间隔1小时执行一次该脚本)

4>: Reserved for future use....

5>: Reserved for future use....

6>: Reserved for future use....

7>: Reserved for future use....


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