为什么我的 Powershell 脚本不起作用？

Question

我创建了用于检查 VPN 连接是否断开并尝试重新连接的脚本。它还发送电子邮件，当 1) 无法用远程 LAN 地址 ping VPN 服务器 2) VPN 连接失败 3) VPN 连接建立。

第一封电子邮件已正确发送和接收，但当 Powershell 必须发送另一封电子邮件时，它会出错。

vpn.ps1 文件内的代码：

$ip = "*.*.*.*"
$result = Get-WmiObject -Query "SELECT * FROM Win32_PingStatus WHERE Address = '$ip'"

if($result.StatusCode -eq 0) {

} else {
    Start-Sleep -s 15

    $EmailFrom = "*@*.*"
    $EmailTo = "*@*.*" 
    $Subject = "###" 
    $Body = "#####################################################"

    $SMTPServer = "*.*.*.*" 
    $SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, ***)
    #$SMTPClient.EnableSsl = $true 
    $SMTPClient.Credentials = New-Object System.Net.NetworkCredential("*@*.*", "*************");
    $SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)

    rasdial.exe ********** /DISCONNECT    
    rasdial.exe ******** ****** ******

    Start-Sleep -Seconds 15

    $ip = "*.*.*.*"
    $result = Get-WmiObject -Query "SELECT * FROM Win32_PingStatus WHERE Address = '$ip'"

    if ($result.StatusCode -eq 0) {
        $EmailFrom = "*@*.*"
        $EmailTo = "*@*.*" 
        $Subject = "########" 
        $Body = "####################################" 
        $SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)
    } else {
        Start-Sleep -s 15

        $EmailFrom = "*@*.*"
        $EmailTo = "*@*.*" 
        $Subject = "################" 
        $Body = "##########################################" 
        $SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)
    }
}

运行时记录：

PS Microsoft.PowerShell.Core\FileSystem::***********> *******\vpn.ps1
#FIRST EMAIL SENT
No connections
Command completed successfully.
Connecting to *********...
Verifying username and password...
Registering your computer on the network...
Successfully connected to ******.
Command completed successfully.
Exception calling "Send" with "4" argument(s): "Failure sending mail."
At \\tsclient\C\New folder\vpn.ps1:26 char:9
+         $SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body)
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : SmtpException


PS Microsoft.PowerShell.Core\FileSystem::******

我已感应到用户名、密码、地址等。我的脚本有什么问题？

Answer 1

您的 $SMTPClient 对象未在 else 块中声明。 您需要在块内使用该对象的实例，或者在外部声明它，以拥有一个全局 $SMTPClient 对象，该对象存在于块中。您还必须填写$SMTPClient.Credentials。

最好的解决方案是在第 3 行的 if 语句之前声明两者。

更新

移动这些行

$SMTPServer = "*.*.*.*" 
$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, ***) 
#$SMTPClient.EnableSsl = $true 
$SMTPClient.Credentials = New-Object System.Net.NetworkCredential("*@*.*", "*************"); 

在那些 if .. else .. 中

只需将其移至第 2 行，就在 if 块之前。