DMARCLY

What is SPF?

Sender Policy Framework (SPF) is an email authentication mechanism which allows only authorized senders to send on behalf of a domain, and prevents unauthorized users from doing so. SPF allows the receiver to check that an email claiming to come from a specific domain indeed comes fro…

"SPF PermError: too many DNS lookups" is a common error seen in many SPF (Sender Policy Framework) implementations. When an often overlooked SPF 10-DNS-lookup limit is exceeded, an SPF PermError, aka SPF permanent error, is returned. SPF PermError's can affect your email deliverability…

While Safe SPF overcomes the 10-DNS-lookup limit in SPF, sometimes it's desirable to flatten only a part of your SPF record, while leaving the rest as is. If this is the case, you can use partial Safe SPF.

One good reason for this is that some email delivery services like HelpScout, Office 365, At…

Contrary to popular belief, setting up DMARC to protect your company email is much easier than it seems. In this post, we will show you 3 easy steps to set up DMARC: generate, publish, and analyze, as illustrated below:

A DMARC record is a TXT record to be…

This article shows how to set up email authentication on your email streams using DMARC data, with actionable steps.

An email stream is the route a group of emails take from the source to the receiver, on behalf of a domain…

This tutorial provides step-by-step instructions on how to set up MTA-STS and TLS reporting with DMARCLY.

MTA-STS, short for Mail Transfer Agent - Strict Transport Security, is a technology that allows email servers to declare the ability to receive Transport Layer Security (TLS)…