Whole Internet in OpenSPF?

Asked bystephanie seale

In SpamAssassin, SPF_PASS has long been overcome for + all in SPF. However, spammers found a remedy against this, asking the entire Internet in four pieces / 2, for example:

v=spf1 a mx ip4: ip4: ip4: ip4: -all

Question: how to overcome this?

I tried to google this question, but immediately there is nothing worthwhile, or I could not find the right words. It is possible to read the source, but lazily, especially if someone has already solved such a problem and just knows the answer.


And how to overcome DKIM and DomainKeys used by spammers ??? With SPF, the question is also relevant.
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