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Authentication & DNS

Why is my SPF failing?

R

E

Authentication & DNS

Why is my SPF failing?

R

E

Authentication & DNS

Why is my SPF failing?

To troubleshoot SPF failures:

  1. Identify your Return-Path (bounce) domain from your email headers

  2. Locate the sending IP address(es)

  3. Use the Vamsoft SPF Policy Tester to diagnose issues

  4. Common causes of SPF failures:

    • Missing include:Emailmail.com in SPF record

    • Incorrect IP addresses in SPF record

    • Too many DNS lookups (exceeding 10 lookup limit)

    • Syntax errors in SPF record

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