bigpond916 wrote:

I received the same NDR but what worries me more is that I received 3
bounced emails as shown below but no one in our company sent these
emails as you can tell from the subject line that the email sent is
obviously spam.

What I am concerned about is that our Server has been hijaked and is
sending out spam?

It probably hasn;t been hijacked. I think two things are happening here.
The first is that your address has been hijacked and the second is that the
mail routers at company.com are misconfigured or that "name" forwards his
mail to someone and that someone forwards it back to name.
--
Brian Tillman