Re: [exim] What's up ith the uceprotect blacklist?

Rene Marticke wrote:
>
> Hi, there,
>
> let me explain two scene why this callouts are abuse.
>
> 1.
> me@domA send mail to you@domB
> --> domB callout whith postmaster@domB if me@domA is valid.
> --> domA use callout to -> so call domB if postmaster@domB is a valid
> user .... loop
>
That doesn't apply to Exim because Exim by default uses a sender of <>
which isn't going to create a loop like what you are claiming. In my
case I use a real email address on my system to avoid the problems of
servers who block <> but my real address is regged to never generate a
return callout.
> 2. if someone sends spam with you@yourdomain around the net
> every mailserver asked you if there is a vaild account at yourdomain. I
> think it's a fine DOS ...
>
>
>

Exim caches callouts so as to minimize the callout traffic. I think it
has a 2 hour memory? And - the callout is short, never delivering a real
message. So the load factors would be really insignificant.

What I see happening here is that UCEPROTECT is deliberately and falsely
listing servers as spammers who really are not spammers. They are trying
to change everyone's behavior using the listing as a threat. If you
don't comply with their ideas about spam filtering then they punish you
by falsely listing you as a spammer. I have contacted them several times
about this and they refuse to whitelist me or fix the problem.

So when they know that I'm a spam filtering company yet they refuse to
take me off their list of spammers, what does that say about their list.
It tells me that their list is worthless.

My solution if they won't fix their problem is to make the spam
filtering community aware of their business practices and hope that
enough people quit using their blacklist that they have to go back to
listing just spammers. When a company knowingly and deliberately lists
people as spammers who they know are spam filtering companies then that
needs to be exposed. I think they need to keep their politics separate
from their lists.