how to send email as anonymous authentication in powershell

Question

I have never used power shell before but my understanding is that it is best way of sending email on windows machine .

My network has provided me following details

SMTP sever
Port
Authentication : Anonymous
From :
To:

Now when I am looked and researched internet I found we need username and password for sending email.

Is there any way I can send email using anonymous authentication with only server name provided and also include atatchment

Thanks in advance

Answer 1

The mail server will do an anonymous relay depends on the configuration of the Recieve Connectors.So, Run the Send-MailMessage on the Exchange server and use 'localhost' as your SMTPServer, then it won't go through a receive connector.
Note: Your email user should exist and part of a valid domain.Then you can send from noreply@ or whatever you want to use.

send-mailmessage -From "noreply@example.com" -To "user01@example.com", "user02@example.com" -Bcc "user03@example.com" -Subject "Anonymous Mail Subject" -Body "Anonymous test Body" -SmtpServer 'localhost' -Port 25

*Note:*25 is the default smtp port.