+double TXT v=spf1 include:_spf.google.com ~all
+ TXT v=spf1 +a +mx -all
+
+doubleplus TXT v=spf1 include:_spf.google.com ~all
+ TXT google-site-verification=q-4MSVLjluQIsBztu5jzJBxAcJXzNcHAk0jHTZEamB8
+ TXT v=spf1 +a +mx -all
+
+uppercase TXT v=sPf1 +all
+