Tackling Fake From Headers ?

Dave Tiger dave at tigeri.com
Mon Mar 29 09:10:25 BST 2004


Hi Jon,

Thanks for the link, I have signed to their mail list and I hope this =
will
help with my issue.

Dave C


-----Original Message-----
From: jon.mercer at achean.com [mailto:jon.mercer at achean.com]=20
Sent: 29 March 2004 08:49
To: Dave Tiger
Subject: Re: Tackling Fake From Headers ?


Have a look at SPF (Sender Permitted From) at http://spf.pobox.com or
somesuch.

This is just one way among many that can be used, but looks to be =
gaining
increased acceptance. AOL are testing it and are seeing a 27% reduction =
in
spam.

Jon Mercer

> Hi List,
>
> I don=92t know if this is to do with postfix or a DNS issue, but is=20
> there a way to not allow emails that do not genuinely come from an=20
> account within our system.
>
> I am trying to find a way to tackle the fake From headers that=20
> spammers use.
>
> I have a feeling that there is no way to stop this but I ask the list=20
> if you may have any ideas that I may implement to try and stop this.
>
> Thank you in advance for any help you may give
>
> Dave C
>
> System: Postfix 2.0.6 / Cyrus SASL 2.1.11 / FreeBSD 4.7 / Bind 9
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.637 / Virus Database: 408 - Release Date: 20/03/2004
>
>
>
> ------ FreeBSD UK Users' Group  -  Mailing List ------=20
> http://listserver.uk.freebsd.org/mailman/listinfo/freebsd-users
>


---
Incoming mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.637 / Virus Database: 408 - Release Date: 20/03/2004
=20

---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.645 / Virus Database: 413 - Release Date: 28/03/2004
=20





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