Email
Spamassassin 過濾器系統地為垃圾郵件生成負 (ham) 分數
我有很多垃圾郵件的問題。我的伺服器設置是帶有 CentOS 6.5 和 Dovecot+Postfix+Spamassassin 的 VPS。
以下是其中一條消息的來源:
Return-Path: <nancy_mitchell@tagbook.co.nz> X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on xxxxxx.xx X-Spam-Level: X-Spam-Status: No, score=-0.5 required=3.0 tests=HTML_MESSAGE, HTML_MIME_NO_HTML_TAG,MIME_HTML_ONLY,RP_MATCHES_RCVD,URIBL_BLOCKED autolearn=ham version=3.3.1 Delivered-To: mail@xxxxxx.xx Received: by mx.xxxxxx.xx (Postfix, from userid 5001) id 584194399E; Sun, 14 Sep 2014 04:34:03 +0200 (CEST) Received: from tagbook.co.nz (tagbook.co.nz [119.47.112.73]) by mx.xxxxxx.xx (Postfix) with ESMTP id 6089C43119 for <mail@xxxxxx.xx>; Sun, 14 Sep 2014 04:33:59 +0200 (CEST) Date: Sun, 14 Sep 2014 14:33:56 +1200 From: "Nancy Mitchell" <nancy_mitchell@tagbook.co.nz> Reply-To:"Nancy Mitchell" <nancy_mitchell@tagbook.co.nz> Message-ID: <59a5f3f-c3c7f-b8@tagbook.co.nz> To: mail@xxxxxx.xx Subject: RE: Lol adooya X-Priority: 3 (Normal) MIME-Version: 1.0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: 8bit <h2><a href="http://www.dirtymath.co.kr/data/question/g0702/login.html?ZGpwQmRqcGxndixndw==">adooya</a></h2> <div> The artifact was instantly forgotten-as I hoped, although it took </div>
如您所見,此郵件的垃圾郵件分數僅為-0.5。任何人有任何想法,這個怎麼辦?這很煩人。
關閉一些 spamassassin 測試
根據我在上述測試中的 SA 配置,只會
RP_MATCHES_RCVD
產生負分(火腿指標)。RP_MATCHES_RCVD
得分在 -1.5 和 -0.5 之間(本地/網路,有貝氏/沒有貝氏)。您可以考慮按照 中所述關閉測試
man Mail::SpamAssassin::Conf
。~/.spamassassin/user_prefs
score RP_MATCHES_RCVD 0
安裝 DCC、Pyzor 和 Razor2。這顯著改善了檢測。如果您仍然收到垃圾郵件,請編寫一些元規則(例如 DCC + 黑名單 = +2 分)。我使用該方法每週阻止 300 多封垃圾郵件,準確率超過 99%。