Re: [EAI] Downgrade testing

we send to the following 10 address, with <eai<ascii>>
>> * echo@generic-nic.net 
>> * echo@nic.fr 
>> * Echo@TU-Berlin.DE 
>> * echo@tu-chemnitz.de 
>> * echo@ouain.com 
>> * repondsmoi@crdp.ac-versailles.fr
>> * echo@cnam.fr
>> * ping@stamper.itconsult.co.uk 
>> * ping@oleane.net
>> * check-auth@verifier.port25.com

we get the nice response from the following 6 address
echo@generic-nic.net
echo@nic.fr
Echo@TU-Berlin.DE
echo@ouain.com
check-auth@verifier.port25.com
repondsmoi@crdp.ac-versailles.fr

we get the reject information from 1 address
echo@copernic.cnam.fr

we can not get any response from other 3 addresses.

Yao Jiankang
CNNIC

----- Original Message ----- 
From: "Ernie Dainow" <edainow@ca.afilias.info>
To: "Stephane Bortzmeyer" <bortzmeyer@nic.fr>; "EAI" <ima@ietf.org>
Sent: Thursday, July 09, 2009 9:09 PM
Subject: Re: [EAI] Downgrade testing - Results

> These echo tests were a good suggestion. I ran a base test from an ASCII 
> address against all echo servers in the list. All responded except 
> echo@cnam.fr. Email bounced with "unknown address", so I  eliminated 
> that server from the test, leaving a total of 9 echo servers.
> 
> The success rate for receiving a response from echo servers:
> 1) From ASCII, no downgrade      9/9      100%
> 2) From EAI, downgrade               7/9        78%
> 
> auth-results@verifier.port25.com provided some SpamAssassin analysis:
> 1) BODY: Bayesian spam probability is 1 to 5%
> 2) BODY: Bayesian spam probability is 5 to 20%
> 
> For the downgrade test sent to individual participants the results were:
> Total Sent    11   (all on different email domains)
> Received       9    82%
> Blocked        2    18%
> 
> These are not large samples, but it is interesting to see that the 
> success rate in both tests were similar, and were in the SpamAssassin 
> range of 20% probability of spam.
> 
> I encourage other implementers to run the same set of tests so we can 
> get a larger sample and see if there are differences between Downgrade 
> implementations.
> 
>    -Ernie
> 
> 
> Stephane Bortzmeyer wrote:
>> On Mon, Jun 22, 2009 at 11:19:48AM -0400,
>>  Ernie Dainow <edainow@ca.afilias.info> wrote 
>>  a message of 41 lines which said:
>>
>>   
>>> The Downgrade test reported on the wiki basically tested against gmail.  
>>> It would be valuable to do more testing 'in the wild' to see how  
>>> Downgrade traverses various email systems in other organizations.
>>>     
>>
>> You can test against various auto-responders which send you back your
>> message (if you know other email addresses of auto-responders, do not
>> hesitate to publish them).
>>
>> * echo@generic-nic.net 
>> * echo@nic.fr 
>> * Echo@TU-Berlin.DE 
>> * echo@tu-chemnitz.de 
>> * echo@ouain.com 
>> * repondsmoi@crdp.ac-versailles.fr
>> * echo@cnam.fr
>> * ping@stamper.itconsult.co.uk 
>> * ping@oleane.net
>> * check-auth@verifier.port25.com
>>   
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