Rex'sĀ Anchor Points & Field Notes

Updating SPF & DMARC records for heightened email security dns records Nov 19, 2025

Watch over my shoulder as I find and fix a couple details on an SPF and DMARC record to tighten email security against someone spoofing my custom domain.Ā 

Continue Reading...
DMARC records - test and update for a stricter policy dns records Nov 12, 2025

DMARC = Domain-based Message Authentication, Reporting, and Conformance

p="none" meansĀ  Policy = none.Ā  Most are requiring p=reject or p=quarantine

rua=mailto:<an email address>Ā  Ā  means send an aggregate report via email

MXToolbox.com = a website to test your own DMARC settings for your custom d...

Continue Reading...