Postfix
當中繼 = 127.0.0.1 時發送郵件給我 550-5.7.1 (gmail)
使用 Web UI（例如圓形立方體）發送電子郵件並且我的中繼是 =127.0.0.1 時，我收到此錯誤
主持 gmail-smtp-in.l.google.com
$$ 64.233.184.27 $$說：550-5.7.1 $$ 193.198.1.11 12 $$我們的系統檢測到此郵件是 550-5.7.1 可能是未經請求的郵件。為了減少發送到 Gmail 的垃圾郵件數量，550-5.7.1 此郵件已被阻止。請訪問 550-5.7.1
摘自 /var/log/mail.log
Sep 14 21:28:06 mail postfix/qmgr[2915]: BB7418551: from=<xxxx@gkri.hr>, size=1082, nrcpt=1 (queue active) Sep 14 21:28:07 mail amavis[2978]: (02978-01) Passed CLEAN {RelayedOpenRelay}, [193.198.1.11]:43798 [193.198.1.11] <xxxxxx@gkri.hr> -> <yyyyyyy@gmail.com>, Queue-ID: C953F422, Message-ID: <03227ea1376656afb567873be8981a60@gkri.hr>, mail_id: 15_o4VKBS9UP, Hits: -7.293, size: 700, queued_as: BB7418551, 3127 ms Sep 14 21:28:07 mail postfix/smtp[3045]: C953F422: to=<yyyyyy@gmail.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=3.4, delays=0.17/0.05/0.04/3.1, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as BB7418551) Sep 14 21:28:07 mail postfix/qmgr[2915]: C953F422: removed Sep 14 21:28:07 mail postfix/smtpd[3021]: disconnect from mail.gkri.hr[193.198.1.11] Sep 14 21:28:07 mail dovecot: imap(xxxxx@gkri.hr): Disconnected: Logged out in=605 out=520 Sep 14 21:28:07 mail postfix/smtpd[3004]: rewrite stream disconnect Sep 14 21:28:07 mail postfix/smtp[3052]: BB7418551: to=<yyyyyy@gmail.com>, relay=gmail-smtp-in.l.google.com[64.233.184.27]:25, delay=0.73, delays=0.19/0.06/0.34/0.15, dsn=5.7.1, status=bounced (host gmail-smtp-in.l.google.com[64.233.184.27] said: 550-5.7.1 [193.198.1.11 12] Our system has detected that this message is 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail, 550-5.7.1 this message has been blocked. Please visit 550-5.7.1 https://support.google.com/mail/?p=UnsolicitedMessageError 550 5.7.1 for more information. qe3si5844139wjc.196 - gsmtp (in reply to end of DATA command)) Sep 14 21:28:07 mail postfix/cleanup[3043]: 954E88552: message-id=<xxxxx@mail.gkri.hr> Sep 14 21:28:07 mail postfix/bounce[3053]: BB7418551: sender non-delivery notification: 954E88552從電子郵件客戶端應用程序 (Android) 發送時，我可以發送我的狀態已發送，並且沒有可見錯誤（電子郵件直接通過）
狀態=已發送 250 2.0.0 OK
Sep 14 21:37:04 mail postfix/qmgr[2915]: BE59C8551: from=<xxxxxxx@gkri.hr>, size=1893, nrcpt=1 (queue active) Sep 14 21:37:04 mail postfix/smtpd[3179]: disconnect from localhost[127.0.0.1] Sep 14 21:37:04 mail amavis[2978]: (02978-04) Passed CLEAN {RelayedOpenRelay}, [89.172.131.36]:56139 [89.172.131.36] <xxxxxx@gkri.hr> -> <yyyyyyy@gmail.com>, Queue-ID: 0C126422, mail_id: 0O_1VMAZ9_sa, Hits: -3.523, size: 1511, queued_as: BE59C8551, 1501 ms Sep 14 21:37:04 mail postfix/smtp[3177]: 0C126422: to=<yyyyyy@gmail.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=1.9, delays=0.36/0.04/0.01/1.5, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as BE59C8551) Sep 14 21:37:04 mail postfix/qmgr[2915]: 0C126422: removed Sep 14 21:37:05 mail postfix/smtp[3180]: BE59C8551: to=<yyyyyyy@gmail.com>, relay=gmail-smtp-in.l.google.com[74.125.71.26]:25, delay=0.62, delays=0.08/0.05/0.33/0.16, dsn=2.0.0, status=sent (250 2.0.0 OK 1473881825 tv2si5887390wjb.173 - gsmtp)我已經設置了反向 DNS (ptr) 以及 SPF。
被拒郵件的標頭
eporting-MTA: dns; mail.gkri.hr X-Postfix-Queue-ID: 92014114E0 X-Postfix-Sender: rfc822; rene.brakus@gkri.hr Arrival-Date: Thu, 15 Sep 2016 14:31:29 +0200 (CEST) Final-Recipient: rfc822; rene.brakus@gmail.com Original-Recipient: rfc822;rene.brakus@gmail.com Action: failed Status: 5.7.1 Remote-MTA: dns; gmail-smtp-in.l.google.com Diagnostic-Code: smtp; 550-5.7.1 [193.198.1.11 12] Our system has detected that this message is 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail, 550-5.7.1 this message has been blocked. Please visit 550-5.7.1 https://support.google.com/mail/?p=UnsolicitedMessageError 550 5.7.1 for more information. d5si660227wjm.249 - gsmtp Return-Path: <rene.brakus@gkri.hr> Received: from localhost (localhost [127.0.0.1]) by mail.gkri.hr (Postfix) with ESMTP id 92014114E0 for <rene.brakus@gmail.com>; Thu, 15 Sep 2016 14:31:29 +0200 (CEST) Received: from mail.gkri.hr ([127.0.0.1]) by localhost (mail.gkri.hr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hFJ_WfGPDrby for <rene.brakus@gmail.com>; Thu, 15 Sep 2016 14:31:28 +0200 (CEST) Received: from mail.gkri.hr (mail.gkri.hr [193.198.1.11]) by mail.gkri.hr (Postfix) with ESMTPA id DEF0F114AA for <rene.brakus@gmail.com>; Thu, 15 Sep 2016 14:31:27 +0200 (CEST) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Thu, 15 Sep 2016 14:31:27 +0200 From: Rene Brakus <rene.brakus@gkri.hr> To: <rene.brakus@gmail.com> Subject: 87687686 Organization: =?UTF-8?Q?Gradska_knji=C5=BEnica_Rijeka?= Message-ID: <63143a0aefe8e00c9d080433cfe50492@gkri.hr> X-Sender: rene.brakus@gkri.hr User-Agent: Roundcube Webmail/0.9-svn通過的電子郵件的標題
Delivered-To: rene.brakus@gmail.com Received: by 10.25.155.130 with SMTP id d124csp2856951lfe; Thu, 15 Sep 2016 01:09:06 -0700 (PDT) X-Received: by 10.194.139.236 with SMTP id rb12mr6579607wjb.101.1473926946908; Thu, 15 Sep 2016 01:09:06 -0700 (PDT) Return-Path: <rene.brakus@gkri.hr> Received: from mail.gkri.hr (mail.gkri.hr. [193.198.1.11]) by mx.google.com with ESMTP id t124si1544078wmt.5.2016.09.15.01.09.06 for <rene.brakus@gmail.com>; Thu, 15 Sep 2016 01:09:06 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of rene.brakus@gkri.hr designates 193.198.1.11 as permitted sender) client-ip=193.198.1.11; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of rene.brakus@gkri.hr designates 193.198.1.11 as permitted sender) smtp.mailfrom=rene.brakus@gkri.hr Message-Id: <57da5722.822d1c0a.c3e70.4b27SMTPIN_ADDED_MISSING@mx.google.com> Received: from localhost (localhost [127.0.0.1]) by mail.gkri.hr (Postfix) with ESMTP id 63D741148C for <rene.brakus@gmail.com>; Thu, 15 Sep 2016 10:09:07 +0200 (CEST) Received: from mail.gkri.hr ([127.0.0.1]) by localhost (mail.gkri.hr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nTE8xSdhwfaS for <rene.brakus@gmail.com>; Thu, 15 Sep 2016 10:09:07 +0200 (CEST) Received: from [192.168.88.209] (unknown [193.198.1.29]) by mail.gkri.hr (Postfix) with ESMTPA id 646EA11496 for <rene.brakus@gmail.com>; Thu, 15 Sep 2016 10:06:07 +0200 (CEST) To: Rene <rene.brakus@gmail.com> From: "rene.brakus@gkri.hr" <rene.brakus@gkri.hr> Subject: Test Date: Thu, 15 Sep 2016 10:06:06 +0200 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_0_1473926766295" ------=_Part_0_1473926766295 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 Content-Disposition: inline VGVzcgoK ------=_Part_0_1473926766295 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: base64 Content-Disposition: inline PGRpdiBzdHlsZT0iZm9udC1mYW1pbHk6ICdDYWxpYnJpJywgJ3NhbnMtc2VyaWYnOyI+PGRpdiBk aXI9Imx0ciI+VGVzcjwvZGl2PjwvZGl2Pjxicj4= ------=_Part_0_1473926766295--
550, “5.7.1”, 我們的系統檢測到此郵件可能是未經請求的郵件。為了減少發送到 Gmail 的垃圾郵件數量，此郵件已被屏蔽
在 smtp 日誌中顯示此消息使我相信我在某種來自Google的黑名單上。但是在配置郵件和 DNS 伺服器並設置 SPF、DKIM 和反向 DNS (PTR) 之後，gmails smtp 不再退回我的電子郵件。
最讓我困惑的是為什麼來自伺服器的一個電子郵件帳戶能夠發送到 gmail。後來我得出結論，這是因為我在使用此表格要求從黑名單中刪除時提供了這封電子郵件
我希望我的經驗也能對其他人有所幫助。