Domains with DNS TXT v=spf1 a:mail.tungsten.com a mx include:spf.protection.outlook.com include:_spf.sparkpostmail.com include:_spf.bigcommerce.com ~all
There is 1 domain that have DNS TXT set to v=spf1 a:mail.tungsten.com a mx include:spf.protection.outlook.com include:_spf.sparkpostmail.com include:_spf.bigcommerce.com ~all.