Re: [OT] Someones sending spam using my Domain name !

["brougham Baker" <bro-yahoo@xxxxxxxxxxxxxx>]

From: "Jewelie" <jewelie@xxxxxxx>
> On 1/5/07, Maccy <maccy@xxxxxxx> wrote:
> > On Fri, 5 Jan 2007, Ho Yin Ng wrote:
> > > I've been having this problem for the past couple of years
...
> > > Doesn't seem like there is anything you can do a part from
change your
> > > domain name! Not helpful I know.
> >
> > I hate 'me too' messages, but me too :)
>
> Just make sure that you only accept mail to a valid email address,
> drop/bounce anything else deals with most of this, no use of a default
> address.

The way to stop this permanently is to use one of the sender authentication
techniques such as-

SPF- http://en.wikipedia.org/wiki/Sender_Policy_Framework
but this limits the ip addresses that you can send from unless used with
SRS. Requires a TXT field in the domains DNS entry. If this is used for
webmail, your provider should be able to do this. I saw some recent talk
that AOL was going to start rejecting email from domains that didn't have
an
SPF record. SPF isn't intended to stop spam, just prove that the domain
name
is used with the senders permission.

DKIM- http://www.dkim.org/
this is a superset of the protocol used by Yahoo, if you look at any
message
from ukha_d you would see something like this-
> Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys
> DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=lima;
d=yahoogroups.com;

b=rdJZnDxUz0qlyX+VmcyaB78S26sXGaVUnMP1MhkLpRkEP5k38MOIv6kjncqltxSehBwSavaAC2
cQ96Zs1wCL4r9Tu9wrO1EeYBsR4hampfhsGBxucxIcwbv9DrwwshBS;

Bro