Indeed. Its not a cure-all, and there are certainly ways that spammers can
"legitimize" their mail in respect to sender authentication. But that does
not take away the swath of things that you can still stop with SPF.
--
ME2
On Thu, Oct 30, 2008 at 2:51 PM, Chris Twa <[EMAIL PROTECTED]> wrote:
> I've found SPF has helped my spam filter immensely just by blocking
> spoofed senders. It's not a cure-all, but it certainly helps and you
> can use it to increase your spam collection for better bayesian.
>
> The only problem I encounter with restrictive SPF is when someone starts
> using a different SMTP.
>
> Chris Twa
>
> Saskaweb IT Solutions
> ph: 306-229-5742
> e: [EMAIL PROTECTED]
>
>
> -----Original Message-----
> From: Jeroen van Aart [mailto:[EMAIL PROTECTED]
> Sent: 2008-10-30 12:49
> To: Questions and Answers for users of ASSP Anti-Spam SMTP Proxy
> Subject: [Assp-user] Spammers embrace email authentication
>
> Just a fyi:
> http://www.theregister.co.uk/2004/09/03/email_authentication_spam/
>
> "As long as spammers comply with the protocol by not spoofing the sender
> address, their messages will not be stopped by SPF, which CipherTrust
> has supported since February 2004. CipherTrust's research among users of
> its own IronMail message security appliance this summer found that a
> spam message is three times more likely to pass an SPF check than it is
> to fail it."
>
> I really would welcome a new working anti spam or phishing feature.
> Sadly SPF isn't one of them and never will be.
>
> Regards,
> Jeroen
>
> ------------------------------------------------------------------------
> -
> This SF.Net email is sponsored by the Moblin Your Move Developer's
> challenge Build the coolest Linux based applications with Moblin SDK &
> win great prizes Grand prize is a trip for two to an Open Source event
> anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Assp-user mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/assp-user
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's
> challenge
> Build the coolest Linux based applications with Moblin SDK & win great
> prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> Assp-user mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/assp-user
>
-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Assp-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/assp-user
