I try using spf record to reduce email spoofing , that cause my domain blocked by others . I have 3 mail server : mail.mydomain.ac.id mail.a.mydomain.ac.id mail.b.mydomain.ac.id We can sent & receipt email to others or betwen them. I use these spf command :
v=spf1 a mx -all
I am not sure , is that correct or not . When I tried to test these spf using spf checking tools , here is the result :
evaluating v=spf1 a mx -all ... Results - record processed without error.
The result of the test (this should be the default result of your record) was, ambiguous . The explanation returned was, SPF Ambiguity Warning: No A records found for: mydomain.ac,id
What should i do to fix these error ?
Thank you very much for any suggestion & help .