Domains with DNS TXT v=spf1 a mx +a:smtprelay.zcluster.gasweb.it -all

There is 1 domain that have DNS TXT set to v=spf1 a mx +a:smtprelay.zcluster.gasweb.it -all.

Top Domains with TXT set to v=spf1 a mx +a:smtprelay.zcluster.gasweb.it -all