[TriLUG] Another seal broken... thinking of installing a C/R anti-spam system

[Jason Faulkner]

C/R systems cause backscatter. Backscatter is considered spam by a lot
of people/organizations:
http://linuxmafia.com/faq/Mail/challenge-response.html

On 1/27/07, jonc at nc.rr.com <jonc at nc.rr.com> wrote:
> Yes, another seal standing between man and the end of the world is
> breaking.  I am looking at installing a Challenge/Response system for
> some of my company's email addresses.
>
> We already do various filtering, etc... but the volume of spam still
> leaking through is about 40/day (about 20% - we are heavily weighted
> towards no false negatives), and we only see about 3 real emails a week
> for these addresses.
>
> The legit folks who send email to these addresses are generally low-tech
> folks (definitely no geeks). So I don't think a C/R system would offend
> them in any way.  Also, I'm thinking of disquising the C/R system as a
> web-based request for more info on the mail they sent in.
>
> The auto-reponse email would have a copy of the original mail/header and
> would link back to a web form that puts their original email into the
> form and askes them to click some buttons to direct the request to the
> proper department :-), plus fill in the proper contact info.
>
> Of course if they are already in our system, they don't get the C/R
> notice. The mail just comes through.
>
> Jon
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-- 
Jason Faulkner
http://oldos.org