Do you by chance have a secondary MX that may be forwarding
email to you?
No, my setup is simple and straightforward. One mailserver, one MX, no gateways, ..just send mail directly to my mail server, my mail server sends mail directly to my users.I have noticed this behavior in the past, when I would delete an employee's account after they left our employment, and they would still be receiving mail rather than it bouncing.It just started bothering me today, due to the MyDoom virus which is just making up users as it goes.
