just notice an issue when you add SPF record as a TXT record on DNS we have to put a dot on the end of the hostname to work. example: hostname: jubifest.org. text: v=spf1 a -all
Thats the case for most DNS servers like BIND and mydns. A full hostname ends always with a dot, if a record has no dot at the end, then it is a relative record.
Hi Forget SPF. It an so stupid solution. You can solve your time. SPF is old an the most mailserver doesn't use spf... admins