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SPF- Avoid Overly permissive All Terms

Overly permissive ‘all’ terms

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+all your domain are belong to them When you allow email to be sent on behalf of your domain by anyone anywhere, then your domain does in a sense belong to anyone who wants it. A common error made by…
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spf check example

What is SPF?

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SPF stands for “Sender Policy Framework,” and it is simply a list of IP addresses that you have allowed to send email on behalf of your domain. It is published in the form of a DNS TXT file (see “what…
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Multiple SPF records

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Don’t fall for bad advice The second most common SPF error made by organizations is publishing multiple SPF records for a single domain. This may be in part due to bad advice offered by various email service providers about setting…
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DNS lookup limits on SPF records

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It is easy to exceed the allowed number of DNS lookups The most common SPF error made by organizations is having too many DNS-querying terms in their SPF record. The following SPF terms cause a DNS lookup: include a mx…
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