Domains with DNS TXT v=spf1 a mx include:_spf.google.com include:spf.mtasv.net include:mail.zendesk.com include:amazonses.com ~all
There is 1 domain that have DNS TXT set to v=spf1 a mx include:_spf.google.com include:spf.mtasv.net include:mail.zendesk.com include:amazonses.com ~all.