Testing Open Relay / Allowed Relay using PowerShell

In my previous post, I posted a script which emails me move reports from office 365. A subset of that script emails using a non-authenticated connection.  This code allows you to test an open relay too… In many ways much easier than using Telnet. So here is that code again.

```     #SMTP server name
\$smtpServer = "relay.domain.com"
#Creating a Mail object
\$msg = new-object Net.Mail.MailMessage
#Creating SMTP server object
\$smtp = new-object Net.Mail.SmtpClient(\$smtpServer)
#Email structure