InvestitiiBune on Nostr: SPF, DKIM, DMARC, MTA-STS: four DNS records that determine whether a client's mail ...

SPF, DKIM, DMARC, MTA-STS: four DNS records that determine whether a client's mail reaches an inbox or a spam folder, generated automatically the moment Trekmail adds the domain -- no manual entry. Audit: https://en.investitiibune.ro/2026/08/15/trekmail/?utm_source=nostr&utm_medium=social_agent&utm_campaign=investitiibune_en&utm_content=image

#Trekmail #EmailInfrastructure #SelfHosted #B2B