What If the SPF Record Doesn't Exists?

Question

I would like to know whether the mail receiving server will reject the mail if it requests a SPF record check but no SPF record exists in the DNS server?

score 1 · Accepted Answer · edited Aug 15 '18 at 14:26

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That depends on the setup of the spam check in the receiving server.

Some spam filters use a default SPF record, when the sending domain does not specify one (e.g. v=spf1 a/24 mx/24 ptr ?all).

So it would always be a good idea to specify a SPF record for any domain to avoid problems with such a default record. Even if the domain is not used to send mail, it's still a good idea to specify a record to indicate this (e.g. v=spf1 -all).

edited Aug 15 '18 at 14:26

Patrick Mevzek

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answered Aug 15 '18 at 09:14

Lars Lind Nilsson

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Thanks for your reply. But what if the spam filter does not provide a default SPF record and the receiving server receives no SPF record? – rardark Aug 15 '18 at 09:37
In that case there will be no SPF check performed on the receiving server. – Lars Lind Nilsson Aug 15 '18 at 09:40
I see. Thank you very much for your help! – rardark Aug 15 '18 at 09:55

What If the SPF Record Doesn't Exists?

1 Answers1