Re: [courier-users] How to fight spam bounces?
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Re: [courier-users] How to fight spam bounces?         

Group: mailing.unix.courierimap · Group Profile
Author: Bernd Wurst
Date: Apr 28, 2008 21:55

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Hi.

On Monday 28 April 2008, Jani Ollikainen wrote:
> Subject pretty much says it all. How to fight against
> spammers who have used my users email address / alias for
> sending email.
>
> Then the bounces begin to arrive.. Most of them
> will come in regular smtp-servers which aren't in any
> blocklists so no help from blocklists.

You could use the DNSBL from backscatterer.org for this.

I did it on a test system that gets flooded by about 150.000 messages per d=
ay=20
for *one* (sic!) address that luckily isn't even used for e-mail.

But keep in mind, some legal senders, even some big ones, are listed there.

In my tests, I found out that one of the biggest german hosting providers,=
=20
1and1.com, was listed there which was not very good for my customers.

regards, Bernd

=2D-=20
Wipe Info uses hexadecimal values to wipe files. This provides more
security than wiping with decimal values.
(Norton SystemWorks 2002 Professional Edition User's Guide, page 158)

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