i guys i have tried everything to stop spam being send from my own domain: i have a no open relay mail server. i have setup SPF record as "v=spf1 a -all", it's supose to only my machine can send email from my domain but why i keep receiving this emails: Return-Path: <[email protected]> Delivered-To: [email protected] Received: from localhost (unknown [127.0.0.1]) by ns310931.ovh.net (Postfix) with ESMTP id B30061E4138 for <[email protected]>; Mon, 8 Mar 2010 12:53:51 +0000 (UTC) X-Virus-Scanned: amavisd-new at ns310931.ovh.net Received: from ns310931.ovh.net ([127.0.0.1]) by localhost (ns310931.ovh.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Kbp40N2DmePP for <[email protected]>; Mon, 8 Mar 2010 12:53:51 +0000 (WET) Received: from BUMOMQMT (unknown [115.187.34.207]) by ns310931.ovh.net (Postfix) with ESMTP id D15031E4118 for <[email protected]>; Mon, 8 Mar 2010 12:53:49 +0000 (WET) Received: from 115.187.33.161 by globalshar.ru; Mon, 8 Mar 2010 04:53:44 -0800 Message-ID: <000d01cabebe$63217080$6400a8c0@jerrod9> From: [email protected] To: <[email protected]> Subject: Russian dating site Date: Mon, 8 Mar 2010 04:53:44 -0800 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="koi8-r"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8089.726 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8089.726
Are you running spf checks on your postfix installation ? Setting up spf records alone in DNS is not enough.
check http://www.topdog.za.net/centos_5_virtual_hosting_postfix_setup#spam_prevention under the spf part. or http://www.openspf.org/Implementations
postfix/policy-spf[5301]: : Policy action=PREPEND Received-SPF: pass (hotmail.com: Sender is authorized to use '[email protected]'... Thanks mate works like a charm, and finally i stoped this plague called SPAM auuuuuuuuuuuuu!!!!