[CentOS] dealing with spoofing
Josh Miller
joshua at itsecureadmin.com
Wed Aug 31 20:21:46 UTC 2011
On 08/31/2011 01:16 PM, 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?
There are two parts to an email that relate to routing; envelope header
and email header. The only consideration given to routing is the
envelope header which has sender and recipient, nothing else.
Reply-To is part of the email header and is there for the email client
to use.
(See RFCs 2821, 2822.)
HTH,
--
Josh Miller
Open Source Solutions Architect
http://itsecureadmin.com/
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