I am using exchange 2003 server and on another box i have symantec brightmail 6.0
Recently i been getting a lot of spoofed NDR from other servers , i think someone grab my domain and send out massive spam emails.
How do i solve this?
Currently my symantec bright 6.0 directory harvesting is not working and i never use any of the exchange anti spam features because all mails
will go thru my brightmail spam filter first