Re: [vps-mail] Challenge Response

[Matt Cohen <lists@xxxxxxxxxx>]

Ah, that's different.

A little off-topic, but I personally use KidzMail for my 5 year old daughter: ‹http://haranbanjo.com/›;

It allows you to set it to only accept email from people in the address book.  It downloads the whole POP account, but only displays the email of known people.

Available for Mac and Windows (I use the mac versioon)

Matt
___
Sent from my Treo 600 PDA - please excuse the brief reply and/or typos

Matt Cohen
It Won't Byte Web Design & Hosting
http://www.iwbyte.com/
lists@xxxxxxxxxx

 ..... Original Message .......
On Mon, 17 Jan 2005 10:04:22 -0700 (MST) Jonathan Duncan <jonathan@xxxxxxxxxx> wrote:
>I remember that post.  I started this thread because I have some users 
>with children who would like to have e-mail accounts for their children 
>but to not want any spam.  (Hey, I want that too, but anyway.)  How I have 
>it set up now is that all mail to their children is sent to the parents 
>who then manually filter and forward real mail to the children.  I thought 
>challenge response might be a good idea for them, but perhaps I will just 
>use the spamassassin features of only accepting mail from certain people 
>for the children's accounts.
>
>Thanks,
>--
>Jonathan Duncan
>Administrator
>801.376.7796
>JKD Web Magic
>http://www.jkdwebmagic.com
>Web Site Hosting and Design
>
>
>On Mon, 17 Jan 2005, Matt Cohen wrote:
>
>> You're welcome to use whatever you like on your systems, but FYI here's a 
>> post I made on the iserver list regarding challenge-response systems:
>>
>> -------
>> 1)As a business, if someone signs up for my newsletter, I'm going to be 
>> assaulted with many of these 'challenge' emails to send out every time I send 
>> a new issue.  Some systems require that you re-send the email from a specific 
>> address with a key-code in the subject line. For a large automated list using 
>> mailman or majordomo, this can be cost-prohibitive and will probably result 
>> in me not completing any of them.
>>
>> 2)What if my online store sends an email receipt which gets blocked by a 
>> challenge response system?  I don't want to take the time to reply to all the 
>> challenges, and then a customer complains that he never got his receipt, or 
>> figures that it didn't go thru and places the order again, etc., etc.,
>>
>> 3)What if a virus sends this person an email, and it bounces with the 
>> challenge to the original virus victim? (or a third party?)  What if THAT 
>> person has a challenge system and sends a challenge BACK to the first 
>> recipient.  Will this create a mail loop?  If not, how does the challenge 
>> system detect that it is another challenge and not send a reply?  how long 
>> will it take for spammers to figure out that system to get their emails to 
>> bypass the challenge system?
>>
>> 4)As a consumer, if I'm trying to contact a business, I don't want the 3rd 
>> degree when trying to buy Something.  Think about the dial-up user:  They 
>> send an email, get off line until the next day, when they find that they have 
>> to send a challenege response back just to make their FIRST email (from 
>> yesterday) get delivered, which is just frustrating and will negatively 
>> impact their feeling of this business.
>>
>> 5)As an ISP/mail host, some spammer uses your domain as a reply-to address. 
>> So you get all these challenges to emails you never sent that you now have to 
>> sort thru one-by-one, since you're not sure which of them are real and which 
>> are as a result of a spammer abusing your domain name.
>>
>> True, no system is perfect, but I'd much rather take my chances with 
>> spamassassin letting spam thru then deal with a '100% spam solution' (their 
>> words) that has these major problems with them.
>> --------
>>
>> Also, here's an old but still valid opinion from CNET:
>>
>> http://news.com.com/2010-1071_3-1009745.html
>>
>> Have fun!
>> Matt
>>
>> At 8:38 AM -0700 1/17/05, Jonathan Duncan said something about:
>>> This was discussed a while back.  Which, if any, Challenge Response Systems 
>>> (CRS) are people using and liking?  spam.abuse.net refers to Spam 


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