SPFとかDKIMとか

SBI証券から

件名：【SBI証券】12月権利確定の好業績・高配当が期待できる10銘柄をご紹介！

こんなメールが送られてきた

To: へいへい

FROM：mail@sbisec.co.jp

SPF：PASS（IP: *****）

DKIM：（ドメイン：n01.smp.ne.jp）

code:shell

dig sbisec.co.jp txt +short | grep spf

code:結果

"v=spf1 ip4:211.14.24.128/25 ip4:203.216.209.0/25 ip4:203.141.55.0/25 ip4:219.127.145.192/26 ip4:113.157.232.0/26 ip4:106.184.127.192/26 ip4:103.71.158.0/24 ip4:27.121.42.8/29 ip4

:13.112.167.71 ip4:18.179.155.207 " "ip4:202.248.164.70 ip4:202.32.255.39 ip4:133.250.177.161 ip4:64.56.164.149 ip4:133.250.188.88/29 ip4:210.130.202.101 ip4:210.130.202.102 ip4:2

10.173.16.39 ip4:210.173.16.40 ip4:210.173.16.44 ip4:210.173.16.45 ip4:103.255.244.174 " "include:smp.ne.jp include:spf.protection.outlook.com include:amazonses.com include:_spf.s

alesforce.com include:spf.bmv.jp ~all"

ip4がいくつか＋

1.

include smp.ne.jp

2.

include spf.protection.outlook.com

3.

include amazonses.com

4.

include _spf.salesforce.com

5.

include spf.bmv.jp

https://gyazo.com/5c1578329692467d61c8d1849596f526

SPF: PASS

DKIM: PASS

DMARC: FAIL

code:shell

dig _dmarc.smp.ne.jp txt +short

"v=DMARC1; p=none; rua=mailto:dmarc-rua@smp.ne.jp"

dig _dmarc.sbisec.co.jp txt +short

"v=DMARC1; p=none"