I have Exchange 2010 server sending out emails using the account email@example.com saying
"this is an automatically generated delivery status notification. Delivery to the following recipients failed
This happens when an email is sent to Exchange server, and it is rejected and and delivery notification is sent out. A lot of these emails are SPAM but also happening to legitimate email address.
I have confirmed this is not being done by our GFI SPAM filter which only filters inbound email and does not look at outbound email and does not send out such emails. I have also disabled the default SPAM filter on the Exchange 2010 server.
I cant find the SMTP queue on this server, its not under inetpub.
Any help with the diagnosis would be appreciated.