MXCorrect Blog

Seeing “dkim=neutral (body hash did not verify)”? Learn what the DKIM body hash is, what changes a message after signing, and how to find and fix it.

Step-by-step MTA-STS and TLS-RPT setup: DNS records, the policy file, testing vs enforce mode, and how to fix the most common errors.

SPF and DKIM both pass, yet DMARC still fails. The cause is almost always alignment. Learn how relaxed and strict alignment work and how to fix them.

How BIMI works, why it demands DMARC enforcement first, and the exact DNS TXT record and VMC steps needed to get your logo next to your emails.

A field-by-field breakdown of DMARC aggregate (RUA) XML reports, so you can tell legitimate senders from spoofing attempts without third-party software.

Two SPF TXT records on one domain cause a permanent SPF failure, not “extra protection.” Learn why it happens and how to merge them safely.

What Gmail and Yahoo’s bulk sender rules actually require in your DNS, and how to check SPF, DKIM, DMARC and PTR records so your mail doesn’t get rejected or throttled.

DNSSEC doesn’t replace SPF/DKIM/DMARC — it protects the DNS lookups underneath them. Here’s when it’s worth enabling.

What MX priority actually controls, why you need a fallback record, and the mismatch mistakes that silently break mail delivery.

Before blaming your content or sender reputation, run through this 8-point DNS checklist — most deliverability problems start here.