zabbix 基于sendmail发送邮件相关问题

先看一下脚本

#!/bin/bash
to=$
subject=$
body=$
from=@qq.com
smtp=smtp.qq.com
passwd=xxxxxxxxx
echo `date "+%y-%m-%d %H:%M:%S"` 发送方:$from 接收方:$to 主题:$subject 邮件内容:$body  >>  /tmp/sendmail.log
/usr/local/bin/sendEmail -v  -f @qq.com -t ${to} -s 14.17.57.241 -u ${subject} -o message-content-type=html -o message-charset=utf8 -xu ${from} -xp ${passwd} -m "${body}"   -o tls=auto >> /tmp/sendmail.log >&

直接通过sendmail命令和脚本执行是没有问题,通过zabbix web界面测试就不行

查看了sendmail的日志报错是这样的,

ERROR => Connection attempt to smtp.qq.com:25 failed: IO::Socket::INET: Bad hostname 'smtp.qq.com'

Nov  :: localhost sendEmail[]: Email was sent successfully!  From: <@qq.com> To: <@qq.com> Subject: [hello zabbix] Server: [smtp.qq.com:]
-- :: 发送方:@qq.com 接收方:jiyanlong@do1.com.cn 主题:hello zabbix 邮件内容:都是gas的发送到发送到
Nov  :: vm_2_9_centos sendEmail[]: DEBUG => Assigned $opt{} key/value: message-content-type => html
Nov  :: vm_2_9_centos sendEmail[]: DEBUG => Assigned $opt{} key/value: message-charset => utf8
Nov  :: vm_2_9_centos sendEmail[]: DEBUG => Assigned $opt{} key/value: tls => auto
Nov  :: vm_2_9_centos sendEmail[]: DEBUG => Connecting to smtp.qq.com:
Nov  :: vm_2_9_centos sendEmail[]: ERROR => Connection attempt to smtp.qq.com: failed: IO::Socket::INET: Bad hostname 'smtp.qq.com'
Nov  :: vm_2_9_centos sendEmail[]: HINT => Try specifying a different mail relay with the -s option.
-- :: 发送方:@qq.com 接收方:@qq.com 主题:Test subject 邮件内容:This is the test message from Zabbix
Nov  :: vm_2_9_centos sendEmail[]: DEBUG => Assigned $opt{} key/value: message-content-type => html
Nov  :: vm_2_9_centos sendEmail[]: DEBUG => Assigned $opt{} key/value: message-charset => utf8
Nov  :: vm_2_9_centos sendEmail[]: DEBUG => Assigned $opt{} key/value: tls => auto
Nov  :: vm_2_9_centos sendEmail[]: DEBUG => Connecting to smtp.qq.com:
Nov  :: vm_2_9_centos sendEmail[]: ERROR => Connection attempt to smtp.qq.com: failed: IO::Socket::INET: Bad hostname 'smtp.qq.com'
Nov  :: vm_2_9_centos sendEmail[]: HINT => Try specifying a different mail relay with the -s option.

这里google里好多, 修改了dns,改了hosts解析

都不行, 最后我把脚本里的smtp.qq.com改为用dig解析的ip,在测试就没有问题了,记录一下;