Email and DNS

26 procedures covering SPF, DKIM, DMARC, MX records, DNS propagation and TTL. Out of scope here: mailbox provider internal rules, marketing deliverability consulting, mail server administration.

Checklists

• DNS migration checklist13 checks
• Email testing checklist17 checks

Questions people ask about this area

• how to test if spf record is working
• how to check bimi record
• why does dmarc fail when spf and dkim pass
• how to check if a txt record exists
• programmatically check if domains are dnssec protected
• test my dns resolver