Guide ·
SPF: check which servers can send for your domain
Read an SPF result, identify the envelope sender and investigate a failure without guessing which DNS record to change.
Read the guide : SPF: check which servers can send for your domainEmail authentication knowledge base
Understand SPF, DKIM, DMARC and email headers. Follow practical guides from an authentication result to your next test.
New to email authentication?
Start with the three mechanisms together, or follow a message from sending to reading its report.
Guide ·
DKIM: understand the signature on your email
Find the DKIM signing domain and selector, interpret a reported signature result and check whether it helps your domain pass DMARC.
Read the guide : DKIM: understand the signature on your emailGuide ·
DMARC: connect authentication to your From domain
Understand DMARC alignment, the difference between a message result and a published policy, and how to investigate your report.
Read the guide : DMARC: connect authentication to your From domainGuide ·
Email authentication headers: what to copy and read
Locate original message headers, find Authentication-Results and keep the evidence needed to understand an SPF, DKIM or DMARC report.
Read the guide : Email authentication headers: what to copy and readPut the concepts to work
Read worked examples and practical checklists in the blog, then test the sending route you use.