Domains with DNS TXT v=spf1 mx a include:ispgateway.de include:secureserver.net include:smtp-relay.sendinblue.com include:spf.sendinblue.com -all
There are 2 domains that have DNS TXT set to v=spf1 mx a include:ispgateway.de include:secureserver.net include:smtp-relay.sendinblue.com include:spf.sendinblue.com -all. The top 2 records ordered by domain rank are listed below.