Spam question

Heinz Diehl htd at fritha.org
Sun Aug 26 21:37:43 UTC 2012


On 26.08.2012, Reindl Harald wrote: 

> all other machines before can write what they like in mail headers

You can claim to be who you want to while connecting to a mailserver,
but you can't fake the IP from which you are connecting. It is
logged by the mailserver while connecting between two square brackets.

The usual format used in Received: headers is

 name (dns-name [ip-address])

"Name" is easy to forge. "Dns-name" is what a reverse lookup on
ip-adress delivers. "Ip-adress" reflects the IP of the machine which
connected to the mailserver which generated this Received: header.

> no, this is not theory, this is how email works and things are

Ok, so please show me the evidence of your statement.




-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 630 bytes
Desc: not available
URL: <http://lists.fedoraproject.org/pipermail/users/attachments/20120826/5173de96/attachment.sig>


More information about the users mailing list