Domains with DNS TXT v=spf1 include:spf.protection.outlook.com a:www236b.sakura.ne.jp mx include:yamaiju.onmicrosoft.com -all
There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com a:www236b.sakura.ne.jp mx include:yamaiju.onmicrosoft.com -all.