Re: uol.com.br is now banned from this list

craigwhite_at_azapple.com

To: fedora-list@redhat.com
Date: Thu, 17 Nov 2005 12:55:38 -0700


---
You're correct and I'm wrong - I forgot about all the details since I
have effectively solved the issue. It is a challenge/response system. I
suppose someone can ask google/gmail or whomever why they don't bounce
it as spam but you'll never get a definitive answer because it doesn't
meet the general application of spam control.
---
> 
> > The problem is that someone is subscribing with a mail account, bouncing
> > it to an account at uol.com.br which has severe anti-spam restrictions
> > which is bombarding any sender to this list.
> 
> s/bouncing/forwarding/
---
not always
---
> 
> > Self defense dictates that we filter them to /dev/null using
> > procmail/sieve on the server, rejects on the server or mail filters in
> > your mail program.
> 
> Yep. Rejects on the server here for any uol.com.br address.
> 
> > Under the banner of a good offense makes a great defense, I proposed
> > some type of tar pit set up by a number of fedora users and within
> > minutes, the smtp servers at uol.com.br will be shut down and they will
> > investigate the issue.
> 
> But anyone clueless enough to set up a challenge-response "anti-spam"
> system may be too clueless to figure out what's going on too...
---
being typical American, I lack linguistic understanding of anything but
English (and I suppose the Brits would have an argument about my
knowledge of that language too) but looking at www.uol.com.br makes me
think that they are a relatively sizable ISP in Brazil and offer this
type of anti-spam as a feature to their customers (regardless of how you
and I judge the concept to be flawed) and since their abuse@uol.com.br
is seemingly deaf to abuses that at least one person has engaged in, the
pro-active measure seems to me to be a suitable candidate for fixing the
problem.
Perhaps as you suggest, they would be clueless to figure out what is
going on but it wouldn't take them very long to act...Each smtp server
only gets so many delivery processes and if enough subscribers use smtp
servers which are tar-pitted for hosts from uol.com.br with each message
from fedora-list@redhat.com it won't take but a few minutes to tie up
their servers in the tar pit. This is the pro-active solution to the
problem. Filtering to /dev/null is a single server solution at best.
The only other pro-active measure that I can conceive of is to have all
users of this list send a protest email to abuse@uol.com.br (but of
course, we have no knowledge that these won't samba over to the
Brazilian equivalent of /dev/null.
Craig
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Re: uol.com.br is now banned from this list

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