On Wednesday 14 January 2009 16:22:25 Russ Lavoy wrote:
> Hello List,
>
> I am wondering about an SPF checking addition for postfix.  Where I see all
> of the addon software, I am not 100% comfortable modifying the postfix code
> and still have it be as secure as it was when I first set it up.
>
> Are there any plans on integrating SPF checking into postfix itself?
>
> If not, does anyone out there know how to stop forged emails coming in as
> someone you know, but they did not send them (as per their email headers)?
>
> Thanks!

Personally, I use "python-postfix-policyd-spf" from 
http://www.openspf.org/Software
(a.k.a. pypolicyd-spf), implemented as a check_policy_service.

EG:

master.cf:
policyd-spf  unix  -       n       n       -       0       spawn
                   user=nobody argv=/usr/bin/policyd-spf

main.cf:
smtpd_recipient_restrictions =
        permit_mynetworks,
        reject_unauth_destination,
        ...
        check_policy_service unix:private/policyd-spf

# ls -l /var/spool/postfix/private/policyd-spf
srw-rw-rw- 1 postfix postfix 0 Jan  6 16:09 
/var/spool/postfix/private/policyd-spf


HTH,

Mark.

-- 
Mark Watts BSc RHCE MBCS
Senior Systems Engineer
QinetiQ Applied Technologies
GPG Key: http://www.linux-corner.info/mwatts.gpg

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