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Fixes & troubleshooting
All our fixes & troubleshooting guides
Fixes & troubleshooting
27 June 2026
DMARC p=none vs reject: Moving Safely to Enforcement
DMARC at p=none only monitors — it doesn't stop spoofing. Here's the difference between p=none, quarantine and reject, and how to move to enforcement without blocking real mail.
Fixes & troubleshooting
27 June 2026
DKIM Fail: How to Troubleshoot and Fix It
Seeing dkim=fail or 'DKIM signature invalid'? Here's why DKIM fails — wrong selector, broken key, alignment — and how to fix it, with a free check of your domain.
Fixes & troubleshooting
27 June 2026
Multiple SPF Records: Why They Break Email (and How to Fix It)
A domain can only have ONE SPF record — two breaks email authentication and sends mail to spam. Here's why multiple SPF records fail and how to merge them into one. Free check.
Fixes & troubleshooting
27 June 2026
How to Fix SPF “Too Many DNS Lookups” (PermError)
SPF "too many DNS lookups" (PermError) silently breaks your email authentication. Here's how to check your lookup count and fix it — flattening, removing includes, and more.