So no good solution...yet -----Original Message----- From: Micheal Espinola Jr [mailto:[EMAIL PROTECTED] Sent: Monday, October 20, 2008 8:04 AM To: MS-Exchange Admin Issues Subject: Re: Stopped being spoofed
Implement sender authentication mechanisms such as SPF and Sender ID. Thats what they are for. Of course, it depends on if the recipient is using SPF as well. But it absolutely helps. Be sure to use "-all" in the authentication string to enforce a rejection. "~all" in many cases will not cause the forged message to be rejected, unless the anti-spam application has been tweaked to do so. I *will* reject a ~all, but many products wont by default or wont at all. Beyond that, you are looking at getting into anti-spam methodologies that involve Message-ID tracking and other header scrutiny methods that aren't truly proved or perfected yet. On Mon, Oct 20, 2008 at 7:37 AM, Beckett, William (Bill) <[EMAIL PROTECTED]> wrote: > What is the best methodology to prevent user email addresses being spoofed > and having NDRs being returned to those accounts? I know we can't prevent > the spoofing but is there no way to stop the NDRs? > > > -- ME2 ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~ ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
