On 10/17/2014 12:03 PM, Joe wrote:
> My point is that a mail server which is accepting mail for a domain
> needs to know the valid recipient list, and to *reject*, not bounce,
> mail for non-existent users during the SMTP transaction. Not
> controversial at all.
Ok, then no, you weren't clear at
On Fri, 17 Oct 2014 07:02:22 -0400
Tanstaafl wrote:
> On 10/13/2014 4:21 AM, Joe wrote:
> > The intention is that the spam emails be accepted by a catch-all
> > domain-wide mail server, then later bounced by the one that holds
> > the mailboxes and knows the addresses are invalid.
>
> And that,
On 10/13/2014 4:21 AM, Joe wrote:
> The intention is that the spam emails be accepted by a catch-all
> domain-wide mail server, then later bounced by the one that holds the
> mailboxes and knows the addresses are invalid.
And that, by definition, is backscatter, which will quickly (and
deservedly
Joel Rees writes:
> If the isp responds with a code that says my user-id is valid, the
> junk mailer knows he has a live address.
They have no way of knowing whether the address is still in use or not.
> If the isp responds to the bad ones with an invalid user-id code, any
> user-id that doesn'
On Mon, 13 Oct 2014 10:24:28 +0900
Joel Rees wrote:
>
> I have an e-mail address my ISP gave me. Back almost twenty years ago,
> when the internet was still a bit safe for naive use, I put my
> isp-provided e-mail address in my home page. For the last fifteen
> years, I've had to periodically c
On Mon, Oct 13, 2014 at 9:24 AM, lee wrote:
> Joel Rees writes:
>
>> (But in this case, absolutely requiring a response would be building a
>> DOS and potential privacy vulnerability into the message
>> infrastructure. The RFCs really should be stored with a summary of
>> relevant comments.)
>
>
Joel Rees writes:
> (But in this case, absolutely requiring a response would be building a
> DOS and potential privacy vulnerability into the message
> infrastructure. The RFCs really should be stored with a summary of
> relevant comments.)
Could you explain how an MTA would create a privacy vul
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