[CentOS] dealing with spoofing

[Always Learning]

On Wed, 2011-08-31 at 16:16 -0400, m.roth at 5-cent.us wrote:

> Here's a thought I just thunk, folks: some scum, apparently in eastern
> Europe, has harvested my email, and is using it in the Reply-To: in its
> spamming efforts. Now, I realize that some mails go out from noreply, but
> other than that, is there a good reason why a mailserver would not be
> configured to send delivery failure to *both* Reply-To and From?

May I suggest you create a sub-domain and a user name the use that in
public places ?  For example:-

	mark at xyz.5-cent.us

As soon as the nasty ******** get that email address simple change the
sub-domain.

If you receive your own mails (meaning run your own mail server) then do
not accept emails from sites where the host name does not exist or does
not resolve to the HELO / EHLO or the IP address of the sending server.

There are lots of other things you can do to reduce the spam, but only
if you run your own mail server or use Google to filer-out the spam.

Paul.