Delivery-Failure on Spam

[Sebastian Ries <Se...@dtnet.de>]

Hi

I have the problem that I get Delivery Failure notice and such mails sent to 
one email address. This also includes Vacations Answeres an such stuff.

Theese answeres are sent on Spam - so someone is faking the "From:"

Reading the subject tells that is definitivly spam.

Is there a possibility to catch this?

It's about 20 mails per houre...

Regards
Sebastian Ries

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Re: Delivery-Failure on Spam

[Matthias Haegele <mh...@linuxrocks.dyndns.org>]

Matus UHLAR - fantomas schrieb:
> On 26.07.07 15:13, Sebastian Ries wrote:
>> I have the problem that I get Delivery Failure notice and such mails sent to 
>> one email address. This also includes Vacations Answeres an such stuff.
>>
>> Theese answeres are sent on Spam - so someone is faking the "From:"
>> Reading the subject tells that is definitivly spam.
>> Is there a possibility to catch this?
>> It's about 20 mails per houre...
> 
> I think there are some tests for delivery notices and autoresponses.
> (see 20_vbounce.cf in rules directory).
> 
> You also can train bayes filter on them and probably to razor/pyzor
> (I think spamassassin -r will take care of all of that).

Backscatter:

http://en.wikipedia.org/wiki/Backscatter
Section: Backscatter of email spam

http://spamlinks.net/prevent-secure-backscatter.htm

Perhaps you could also deal at MTA Level with this.

Rarely it helped to contact the postmaster of backscatter sources.
There are also some blacklists (no experience on this).

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Re: Delivery-Failure on Spam

[Matus UHLAR - fantomas <uh...@fantomas.sk>]

On 26.07.07 15:13, Sebastian Ries wrote:
> I have the problem that I get Delivery Failure notice and such mails sent to 
> one email address. This also includes Vacations Answeres an such stuff.
> 
> Theese answeres are sent on Spam - so someone is faking the "From:"
> Reading the subject tells that is definitivly spam.
> Is there a possibility to catch this?
> It's about 20 mails per houre...

I think there are some tests for delivery notices and autoresponses.
(see 20_vbounce.cf in rules directory).

You also can train bayes filter on them and probably to razor/pyzor
(I think spamassassin -r will take care of all of that).

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Matus UHLAR - fantomas, uhlar@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
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