Domains with DNS TXT v=spf1 a mx include:mail.zendesk.com a:mailrelay.hinkleylightingonline.com a:mailrelay.centralus.cloudapp.azure.com ~all
There is 1 domain that have DNS TXT set to v=spf1 a mx include:mail.zendesk.com a:mailrelay.hinkleylightingonline.com a:mailrelay.centralus.cloudapp.azure.com ~all.