DNS Records
Domain: domaintest.airforce.
Record: txt
2015-03-27 -> 2015-03-27 "v=spf1 include:sendgrid.net ~all"
2015-04-04 -> 2016-06-19 "v=spf1 include:sendgrid.net ~all"
2021-03-20 -> 2021-05-23 "v=spf1 include:sendgrid.net ~all"
2021-06-12 -> 2021-12-11 "v=spf1 include:sendgrid.net ~all"