Cobra Forum

Symptoms

• Email sent from an external domain is not received on a Plesk server.
• Following entries are found in /var/log/maillog:
  
  Code Select Expand
  example dk_check[2597]: DKIM verify result: DKIM Feed: No signature
example dmarc[2598]: Starting the dmarc filter...
example dmarc[2598]: DMARC: REJECT message for john.doe@example.com
example postfix-local[2594]: message discarded by a mail handler


Cause
Message is rejected due to incorrect DMARC record.

Resolution
Use one of the following solutions:

• Advise the sender to configure the DMARC record for the outgoing domain.
• Disable DMARC check for incoming mail on the server.
• Exclude the sender domain from the DMARC check.
• Add the domain's IP address to white list under Plesk> Tools & Settings > Mail Server Settings > White List