Re: uol.com.br and petsupermarket
On 3/13/06, MJ Ray <firstname.lastname@example.org> wrote:
> "Gustavo Franco" <email@example.com>
> > Hi Anand,
> Hope you don't mind me replying. You sent this to -project.
> > Why every uol.com.br address was unsubscribed and not only
> > petsupermarket, AFAIK there's no general problem with that domain,
> > right? [...]
> The Challenge-Response system appears to be a uol.com.br service
> and there seems no way to detect externally which users are using
> it. I don't know what proportion of @uol.com.br use it. Do you?
Yes, it's their service and the C-R thing sucks. I'm not using
@uol.com.br but that's not the point, see below.
> See also:
> Bug report that triggered the unsubscribe, but apparently
> not the first time @uol.com.br users have been C-R spamming.
> Challenge Response Anti-Spam Systems Considered Harmful
> Earlier version posted to debian-user
Good research really, but do you see that firstname.lastname@example.org
isn't subscribed in our MLs ? It's other address that is forwarding to
email@example.com. The mass-unsubscribe side effect here is
that we're hurting users when firstname.lastname@example.org is still free
to mail our lists. What's the rationale ? Force uol users after
unsubcribe them to ask their ISP send a reply for Debian ?