Dear Swinog members
Until now, we provided an authenticated smtp-server for our customers
and a separate "open" smtp-server for customers with email-adresses
from other providers. We would like to shut down the relaying server
and have the customers use the smtp-servers from their mail-provider
(g
Roger Schmid wrote:
Dear Swinog members
Until now, we provided an authenticated smtp-server for our customers
and a separate "open" smtp-server for customers with email-adresses
from other providers. We would like to shut down the relaying server
and have the customers use the smtp-servers from
Hi Roger,
> Now we found out that bluewin doesn't allow authenticated smtp-relay
> from users outside their ip-range, so all our customers with
> bluewin-mailadresses would have no smtp-server available.
That's not entirely correct:
smtpauth.bluewin.ch will relay mails from non-bluewin-ip-ranges
On Fri, Jun 13, 2008 at 10:13 AM, Adrian Ulrich <[EMAIL PROTECTED]> wrote:
> Hi Roger,
>
>> Now we found out that bluewin doesn't allow authenticated smtp-relay
>> from users outside their ip-range, so all our customers with
>> bluewin-mailadresses would have no smtp-server available.
>
> That's no
Roger Schmid wrote:
[..]
Otherwise spammers would open 100th's of free accounts and use them to send
spam from
non-bluewin IPs :-/
I see the problem, but perhaps something like a captcha would also be
sufficient to prevent this.
SMTP-Captcha's? :)
How do you envision that?
Greets,
Jeroen
On Fri, Jun 13, 2008 at 10:52 AM, Jeroen Massar <[EMAIL PROTECTED]> wrote:
> Roger Schmid wrote:
> [..]
>>>
>>> Otherwise spammers would open 100th's of free accounts and use them to
>>> send spam from
>>> non-bluewin IPs :-/
>>
>> I see the problem, but perhaps something like a captcha would also
Roger Schmid schrieb:
On Fri, Jun 13, 2008 at 10:13 AM, Adrian Ulrich <[EMAIL PROTECTED]> wrote:
Hi Roger,
I see the problem, but perhaps something like a captcha would also be
sufficient to prevent this.
I don't think so.
Spammer signing up for free accounts is also a "social"
Roger Schmid wrote:
On Fri, Jun 13, 2008 at 10:52 AM, Jeroen Massar <[EMAIL PROTECTED]> wrote:
Roger Schmid wrote:
[..]
Otherwise spammers would open 100th's of free accounts and use them to
send spam from
non-bluewin IPs :-/
I see the problem, but perhaps something like a captcha would also b
Hi
Jeroen Massar schrieb:
Roger Schmid wrote:
[..]
Otherwise spammers would open 100th's of free accounts and use them
to send spam from
non-bluewin IPs :-/
I see the problem, but perhaps something like a captcha would also be
sufficient to prevent this.
SMTP-Captcha's? :)
I guess he mea
Jeroen Massar schrieb:
Just display the captcha from the signup on $pornsite, a person will
fill it in for you, captcha bypassed. If it is interesting and cheap
for then to abuse it, they will.
Do you have a current, working example for that?
(Just for research purposes, of course)
;-
On Fri, Jun 13, 2008 at 10:58 AM, Jeroen Massar <[EMAIL PROTECTED]> wrote:
> Roger Schmid wrote:
>>
>> On Fri, Jun 13, 2008 at 10:52 AM, Jeroen Massar <[EMAIL PROTECTED]> wrote:
>
> Just display the captcha from the signup on $pornsite, a person will fill it
> in for you, captcha bypassed. If it i
Rainer Duffner wrote:
Jeroen Massar schrieb:
Just display the captcha from the signup on $pornsite, a person will
fill it in for you, captcha bypassed. If it is interesting and cheap
for then to abuse it, they will.
Do you have a current, working example for that?
(Just for research purpos
Hi
Rainer Duffner schrieb:
Jeroen Massar schrieb:
Do you have a current, working example for that?
(Just for research purposes, of course)
;-
Well, I found an article mentioning the idea:
http://www.boingboing.net/2004/01/27/solving-and-creating.html
But it doesn't seem to provide an impl
Hi,
> Thank you for clearing this up. So we have to give bluewin-users with
> free bluewin mail-accounts an smtp-account on our servers I think.
Well, they could call our helpdesk and ask them to disable the
'Restricted IP-Range' feature for a specific mailaccount.
Our helpdesk will disable it
Adrian Ulrich schrieb:
I see the problem, but perhaps something like a captcha would also be
sufficient to prevent this.
It wouldn't prevent it, it just makes it harder. (Some spammers don't even use
bots to create accounts. Using real people appears to be cheaper sometimes..)
It always takes
Jeroen Massar writes:
> Just display the captcha from the signup on $pornsite, a person will
> fill it in for you, captcha bypassed. If it is interesting and cheap
> for then to abuse it, they will.
The approach is mentioned in an excellent talk by Louis von Ahn, who
invented the CAPTCHA:
http://
16 matches
Mail list logo
