Domains with DNS TXT v=spf1 +a +mx +a:cus-web01.ds-systems.eu +a:mail.ds-systems.eu +a:mailgateway.ds-systems.eu -all

There are 53 domains that have DNS TXT set to v=spf1 +a +mx +a:cus-web01.ds-systems.eu +a:mail.ds-systems.eu +a:mailgateway.ds-systems.eu -all. The top 50 records ordered by domain rank are listed below.