Currently I'm facing problem of my company email domain been blocked by spamhaus and mailspike. My email server is exchange 2007 and I'm using symantec brightmail 9 to blocked spam from inbound and outbound.
It happen twice a week already.
I've run full scan to all the company PC and servers.
How can I checked the source or the sender of the spam with exchange or brightmail? I've checked with exchange's message tacking but couldn't find any spam email.