Domains with DNS TXT v=spf1 ip4:52.229.100.165 include:spf.protection.outlook.com include:authsmtp.com include:mail.imismailcenter.com -all
There is 1 domain that have DNS TXT set to v=spf1 ip4:52.229.100.165 include:spf.protection.outlook.com include:authsmtp.com include:mail.imismailcenter.com -all.