dmarcian Tools

SPF-Identified Servers – How and Why

To turn DMARC into something useful to people, dmarcian processes DMARC data using a big pile of rules.  These rules identify sources of email, and dmarcian presents users with DMARC compliance information based on email source. One identified source of email is called "SPF-Identified Servers", and dmarcian users are often curious as to how data ends up in this source.  How and why this source works is explained below. (more…)
dmarcian
5 April 2016
dmarcian Tools

Meaning of “WARNING: No A or AAAA records found”

If you publish an SPF record and use the a mechanism, but your domain doesn't actually have an A record in place, then you'll see this warning. Here's a sample SPF record that contains the a mechanism (the a is in bold): v=spf1 a include:_spf.google.com ~all The A DNS record is how you use the DNS to associate an IP address with your domain.  The AAAA DNS record (also called "quad-A") is used to associate an IPv6 address with your…
dmarcian
8 October 2015
dmarcian Tools

Meaning of “No DMARC reports received yet which confirm DKIM signing”

Users sometimes ask What does "No DMARC reports received yet which confirm DKIM signing" mean? dmarcian uses DMARC-XML data to detect the presence of DKIM signatures.  There is no straight-forward way to query the internet for the presence of DKIM signatures, and so dmarcian relies on the contents of DMARC-XML reports to provide information on DKIM signatures. Given the above, there are 4 reasons why you might see this message: DKIM hasn't been implemented with the domain's source(s) of email. DKIM…
dmarcian
7 October 2015