Linux下Email安装配置与发信

yum -y install mailx

#配置参数
from: 对方收到邮件时显示的发件人
smtp: 指定第三方发送邮件的smtp服务器地址
smtp-auth: SMTP的认证方式。默认是LOGIN，也可改为CRAM-MD5或PLAIN方式
smtp-auth-user: 第三方发邮件的用户名
smtp-auth-password: 用户名对应密码

#配置详情
set from="12123@qq.com" 
set smtp="smtp.qq.com"
set smtp-auth-user="12123@qq.com" 
set smtp-auth-password="aawbubhyfhuucbdd"
set smtp-auth=login

# 语法：
mail -s "主题"  收件地址                       # 无邮件正文
mail -s "主题"  收件地址< 文件(邮件正文.txt)   # 有邮件正文
echo "邮件正文" | mail -s 邮件主题  收件地址
cat 邮件正文.txt | mail -s 邮件主题  收件地址
mail -s "主题" -a 附件 收件地址 < 文件(邮件正文.txt) # 带附件


#案例：
% mail -s "测试"  12123@foxmail.com
% mail -s "邮件主题"  12123@foxmail.com < /data/findyou.txt
% echo "邮件正文内容" | mail -s "邮件主题"  291238737@qq.com
% cat  /data/findyou.txt | mail -s "邮件主题"  12123@foxmail.com
% mail -s "邮件主题"  -a /data/findyou.tar.gz  12123@foxmail.com  < /data/findyou.txt  #注意发信地址放在后面

[root@WeiyiGeek ~]$ echo "邮件正文内容" | mail -s "mail测试发信"  291828737@qq.com
[root@WeiyiGeek ~]$ echo "test test" | mail -s "测试附件" -a "/var/log/yum.log" 291828737@qq.com

#!/bin/bash
help(){
   echo "eg: $0 [Subject] [address] [content_file] [file]"
   echo ""
   exit 1
}
if [ ! -n "$1" ] ; then
    help
fi

cDate=`date +%Y%m%d`
if [ ! -n "$2" ] ; then
    help
else
    mail_to=$2
    echo "      Send Mail to ${mail_to}"
fi


if [ ! -n "$4" ] ; then
    mail -s $1 ${mail_to}<$3
else
    mail -s $1 -a $4 ${mail_to}<$3
fi

[root@123]$ ./sendmail.sh  test  xxxx@qq.com  abc.txt
Send Mail to xxx@qq.com

systemctl status postfix

sendmail restart
sendmail: error while loading shared libraries: libmysqlclient.so.18: cannot open shared object file: No such file or directory

[root@node2 ld.so.conf.d]# ldd /usr/sbin/sendmail
    linux-vdso.so.1 =>  (0x00007ffce43fa000)
    libldap-2.4.so.2 => /lib64/libldap-2.4.so.2 (0x00007f97fc570000)
    liblber-2.4.so.2 => /lib64/liblber-2.4.so.2 (0x00007f97fc361000)
    libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f97fc0ff000)
    libmysqlclient.so.18 => not found  #发现缺少该库

#下载该动态链接库和重新刷新加载lib
sudo wget -O /usr/lib/libmysqlclient.so.18 http://files.directadmin.com/services/es_7.0_64/libmysqlclient.so.18
#echo "/usr/lib/" >>/etc/ld.so.conf
ldconfig