Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:_oldspf.mizuho-c.ac.jp -all
There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:_oldspf.mizuho-c.ac.jp -all.
There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:_oldspf.mizuho-c.ac.jp -all.