Incoming mail is not received on Plesk server: DMARC: REJECT message for john.doe@example.com

Symptoms

• Email sent from an external domain is not received on a Plesk server.

• Following entries are found in /var/log/maillog:

  CONFIG_TEXT: 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