1. whois

mm.mizuhobank.co.jp.    600     IN      TXT     "v=spf1 include:smp.ne.jp 
include:mktomail.com 
include:spf.securemx.jp 
include:_spf.qualtrics.com" 
" +ip4:210.162.178.137 +ip4:210.162.178.138 
+ip4:210.162.178.139 +ip4:210.162.178.140 ~all"

2. history

mizuhobank.co.jp の SPFは設定なし。

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