Scott -
If you would a little help please w/my Bind to impliment SPF:
In a zone file I would add:
example.com. IN TXT v=spf1 mx ptr ip4:63.170.56.4 -all
mail.example.com. IN TXT v=spf1 a -all
mail2.example.com. IN TXT v=spf1 a -all
Is this correct - one line for the domain and one line for each
mailserver?
Thanks!
-Nick Hayer
Date sent: Thu, 18 Dec 2003 14:33:38 -0500
To: [EMAIL PROTECTED]
From: R. Scott Perry [EMAIL PROTECTED]
Subject:Re: [Declude.JunkMail] SPF support to be added to next beta
Send reply to: [EMAIL PROTECTED]
We will be adding support for SPF (Sender Permitted From, at
http://spf.pobox.com ) to the next beta of Declude JunkMail. This is
a system that lets owners of domains publish information on what
mailservers people can use to send mail from the domain. We expect
that this can be very useful in blocking spam (similar to the
SPAMDOMAINS test), as well as helping ensure that legitimate mail
gets through.
For those that are interested, we now have an interim release with SPF
support in it. It can be downloaded from
http://www.declude.com/interim (a new URL that we are going to be
using for interim releases, that explains a bit more about them). To
use the new SPF test, you can add lines such as:
SPFPASS spf passx -5 0
SPFFAIL spf failx 8 0
to your global.cfg file. SPF returns PASS for E-mail that passes
SPF (that comes from an IP that is acceptable to the owner of the
domani that it claims to be coming from), FAIL for E-mail that fails
SPF (that does not come from an acceptable IP for the domain), or
UNKNOWN (for E-mail from domains that do not use SPF yet, or for
some other reason should return UNKNOWN).
This will help reduce false positives (for domains that have SPF
support), and help capture more spam (as spam comes in from domains
that have SPF support, but the spammer isn't using an acceptable IP).
-Scott
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