Technical Guidance

This is a selection of our blog content that includes useful articles on understanding, deploying and managing DMARC, SPF, DKIM and related technologies.

Subdomain Management Changes

By | Ecosystem News, Technical Guidance

As many of you may have noticed, there have recently been some changes to the UI regarding subdomains. After talking with people about how subdomains were being used and abused across the internet, we decided to spend some time rethinking how dmarcian process, sorts and displays subdomains. These new changes allow our system to handle…

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SPF-Identified Servers – How and Why

By | dmarcian Platform, Technical Guidance

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…

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SOBOO: Delegation with CNAMEs

By | Email Technology, Technical Guidance

Sending On Behalf Of Others: Sub-Domain Delegation With CNAMEs This article expands on the “CNAMEs” approach described in the larger How to send DMARC-compliant email on behalf of others article.  An assumption is that the reader is sending email on behalf of others, and desires to send such email in a manner compliant with DMARC.

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SOBOO: Full sub-domain delegation

By | Email Technology, Technical Guidance

Sending On Behalf Of Others: Full Sub-Domain Delegation This article expands on the “full delegation” approach described in the larger How to send DMARC-compliant email on behalf of others article.  An assumption is that the reader is sending email on behalf of others, and desires to send such email in a manner compliant with DMARC.

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