spf

http://www.openspf.org/SPF_Record_Syntax

Here is some SPF examples

v=spf1 include:_spf.google.com a a:server10.hosthat.com ip4:147.243.1.48 -all

DMARC record

_dmarc.yourdomain.com TXT  "v=DMARC1; p=none"

If you need to reject email, add

v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]

p=quarantine If DMARC failed, remore mail server will accept the mail, but mark it as spam.

If you just need the report, add

v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected];

[email protected] – This can be any email address to which you need DMARC reports sent. Mail providers sent you report on this, that you can review to make sure no one sending spam mails.

SPF Tools

http://www.kitterman.com/spf/validate.html
http://spf.myisp.ch

Cpanel Server Block Incoming SPF Failed Mails