SHEET 02 / DELIVERY
Trace the message before changing its wording.
Spam placement can come from identity, reputation, sending behaviour or content. Start with evidence from the message headers and DNS.
01
Check authentication results
Read SPF, DKIM and DMARC results in the received message source. A DNS record existing is not the same as the message passing.
02
Check every sender
Website forms, invoicing software, newsletters and staff mail may use different sending systems and need consistent authentication.
03
Check behaviour and recipients
Sudden volume, invalid recipients, weak consent and low engagement can damage delivery even when DNS is correct.