我想用powershell发送电子邮件。如果我手动输入我的凭据，该脚本可以正常工作。但我想在脚本中提供凭证参数。我的脚本如下所示：
$From = "test@yahoo.de"
$To = "test2@yahoo.de"
$Cc = "test@yahoo.de"
$Attachment = "C:\Users\test\test\test.ini"
$Subject = "Email Subject"
$Body = "Insert body text here"
$SMTPServer = "smtp.mail.yahoo.com"
$SMTPPort = "587"
Send-MailMessage -From $From -to $To -Cc $Cc -Subject $Subject `
-Body $Body -SmtpServer $SMTPServer -port $SMTPPort -UseSsl `
-Credential (
$MyClearTextUsername=’test@yahoo.de’
$MyClearTextPassword=’test123’
$SecurePassword=Convertto-SecureString –String $MyClearTextPassword –AsPlainText –force
$MyCredentials=New-object System.Management.Automation.PSCredential $MyClearTextPassword,$SecurePassword) -Attachments $Attachment