TXT v=spf1 +a +mx -all
uppercase TXT v=sPf1 +all
+passme.helo TXT v=spf1 +all
; Alias A record for the local host, under the name "server1"
-server1 A HOSTIPV4
+server1 A HOSTIPV4
+serverbadname A HOSTIPV4
+serverchain1 CNAME server1
+alternatename.server1 CNAME server1
; DANE testing