After looking at some default installations of exchange servers it
doesn't look good.

Say if your domain name is games.com and if some one sends an email to games@games.com this will send an email to every one of your users and say some one starts sending out a mass email bomb to that address, will you get the picture.

I'm sure this is old, but if any one has a fix for this please post.
Thanks

My only guess is that you do the patches and updates...I just tried my Exchange server and it did not do it. Perhaps I modified domething on install however I doubt it since that was my first Exchange server install.

Sorry I don't have the exact fix...

Did it actually mail to all your users?

yes all of them, prety nuts. All patches are up2date.
Theses were on sbs2000

again if domain = abc.com then the email is abc@abc.com

Thanks for the info