今日寄到客戶信箱, 一直被退信, 想問如何解決?
The original message was received at Wed, 27 Jul 2016 14:02:38 +0100 from localhost [127.0.0.1]
----- The following addresses had permanent fatal errors ----- teodoro.pojol@rwmanila.com
(reason: 521 5.2.1 Error: True source IP failed SPF check)
----- Transcript of session follows ----- ... while talking to [210.213.147.41]:
DATA
<<< 521 5.2.1 Error: True source IP failed SPF check
554 5.5.0 Remote protocol error
已邀請的邦友 {{ invite_list.length }}/5
錯誤訊息應該是告訴你你們家的DNS沒有SPF(Sender Policy Framework)紀錄，而對方的系統有使用websense會去檢查是否有此設定，沒檢查到就退信，請產生一下SPF紀錄並添加在你們家的DNS server即可。
什麼是SPF紀錄: http://ithelp.ithome.com.tw/articles/10124038
SPF 產生器: http://www.spfwizard.net/
iThome鐵人賽
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