Check if the SMTP address is blacklisted by the detection site

通常，我们可能因为某些用户发送了一些非常规邮件，邮件出口地址被一些权威网站列入黑名单，导致大量业务邮件无法正常发送。 这时候，我们可以通过powershell写一些关于IP地址检测的脚本，并列入计划任务，最大程度上降低邮件出口地址被列入黑名单产生的业务影响，脚本内容如下：

#获取页面信息
$web = (invoke-webrequest "https://www.talosintelligence.com/reputation_center/lookup?search=xxx.xxx.xxx.xxx"). Content

#自定义邮件属性 & Content
$msg 1= "xxx.xxx.xxx.xxx blacklist, please check!"
$msg 2= "MailAddress isn't included in the blacklist!"
$SMTP = "SMTP Server" br/> $from = "[email protected]"
[Email protected] "br/> $cc ="[email protected]"

$body 1= "SMTP address is ok!"

#判断IP地址是否被Black
if ($web-match ' <span class= "blacklisted" >Listed</span> ')
{send-mailmessage-subject $msg 1-smtpserver $smtp-from $from-to $to-cc $cc-body $body
}

Else
{send-mailmessage-subject $msg 2-smtpserver $smtp-from $from-to $to-cc $cc-body "$body 1"
}

Check if the SMTP address is blacklisted by the detection site