From: Luca Hall (lhall@setnine.com)
Date: Tue Apr 08 2008 - 18:54:35 ART
shouldn't the mlm software not be allowing non-registered emails/addresses
to make it to the list; especially since their not register messages?
> Oops.. meant to send this to the list....
>
> Actually, this practice is called joe-jobbing and a lot of it can be
> corrected with the use of SPF records. I'm talking with Paul now
> about setting one up to hopefully reduce/eliminate this.
>
> On Tue, Apr 8, 2008 at 5:26 PM, Guy Sherr <gsherr@gmail.com> wrote:
>> This is not the work of a jackass spammer. The work is more likely
>> the result of a bot-net doing the work of army for a jackass spammer.
>> Secondarily, the spam is actually being "returned" to the sender, who
>> presumably needs to change the address. I can think of a couple of
>> tweaks to smtp (that is, the protocol) which would put an end to this
>> practice, however, as it is now, there is no reasonable measurement
>> for deciding whether to automatically determine whether the mail
>> should be marked as spam.
>>
>> The question really breaks on a spoof mechanism. When the smtp server
>> collects "your" return note, it should be given to you strictly
>> because it is, by definition, a message you "demanded" so you could
>> know whether your email got out.
>>
>> Tweaks? The protocol could allow for a 'dead' addressee at the near
>> end (where this message is supposed to be coming from). If the
>> sender's email address maps to a mail exchanger, and the mail
>> exchanger's ip address is not the same as that of the machine
>> returning your email, then the notice goes in the garbage.
>>
>> The problem is that means about 1,000,000,000 extra DNS lookups per
>> day.
>>
>> --
>> "I love deadlines. I love the whooshing noise they make as they go
>> by." -- Douglas Adams (author of the Hitchhiker's Guide to the Galaxy)
>>
>>
>>
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