[CentOS] dealing with spoofing

On 8/31/2011 4:37 PM, Josh Miller wrote:
> On 08/31/2011 01:33 PM, m.roth at 5-cent.us wrote:
>> You're saying it uses the envelope, not if exists Reply-To, else From? The
>> problem I have with that is that a few of them have returned the email,
>> with full headers, and I see the *only* reference to my email address is
>> in the Reply-To.
> You are seeing the "full" email headers.  You will not see the envelope 
> headers unless you capture packets or view mail server logs, etc..

Actually, what you are interested in is the envelope sender that the
remote server saw.  And there is no way for you to see that unless you
have access to the remote server's logs.

-- 
Bowie