Re: [exim] UCEPROTECT Blacklists and why callouts are abusiv…

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Author: Chad Leigh
Date:  
To: Andrew - Supernews
CC: exim users
Subject: Re: [exim] UCEPROTECT Blacklists and why callouts are abusive

On Oct 17, 2006, at 5:15 PM, Andrew - Supernews wrote:

>>>>>> "Renaud" == Renaud Allard <renaud@???> writes:
>
> Ian> but my sender verification callouts don't fill mailboxes or
> Ian> server queues. And, they do stop lots of spam.
>
>>> Only at the expense of others, which isn't acceptable.
>
> Renaud> In a perfect world we would need neither callouts neither
> Renaud> blacklists as people wouldn't send spam in the first
> Renaud> place. But we are not in a perfect world.
>
> Spam is bad because it is the use of other people's resources without
> permission.
>
> Trying to block spam by using other people's resources without
> permission is just as bad as sending spam.


You are not using other people's resources without permission. As
soon as you provide support for an email address, you have given
permission.

>
> Renaud> It is a fact that callouts stop spam, are better than full
> Renaud> fledged bounces (or TMDA) and don't fill mailboxes.
>
> Renaud> It is also a fact that DNS lists that list IP ranges without
> Renaud> any proof of spam just prevent other people from sending
> Renaud> ham. This is also at the expense of these "others", which is
> Renaud> also unacceptable.
>
>
> None of this is true for callouts. We are forced to expend server
> resources in handling callouts. Our ability to receive our own
> email is impaired by other people's use of callout verification.


It is part of the bargain for claiming to host an email address.


> (How well would your mailserver stand up to receiving four orders
> of magnitude more connections per second than it should?)
>
> Renaud> So we are just talking on what expense is the worst.
>
> No. We're talking about WHOSE EXPENSE IT IS.


It is part of the expense you signed up for when you claim to provide
email services.

Chad

>
> Expend your own resources how you choose; but once you start presuming
> to think that you have some claim on other people's resources then you
> have crossed the line.
>
> --
> Andrew, Supernews
> http://www.supernews.com
>
>
> --
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---
Chad Leigh -- Shire.Net LLC
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chad at shire.net