ERROR: 550 5.7.1 Email rejected per DMARC policy

Article Number: 000065135

Last Modified: Thu Mar 19 08:57:49 GMT 2020


  • Outgoing messages are being rejected by a DMARC check.
  • SMTP error from remote mail server after end of data: 550 5.7.1 Email rejected per DMARC policy


  • SolarWinds Mail Assure
  • Outgoing


  • Message failed SPF or DKIM record check, or SPF or DKIM alignment check performed by the recipient mail server, and was rejected by the recipient mail server per sending domain's DMARC record specifications
  • Publish/update SPF and DKIM records for sending domain to accurately represent sending IP addresses and messages permitted to send on behalf of the sending domain
    1. Setting up SPF for your domain
    2. How to setup DKIM with Mail Assure
  • For more information on DMARC please see our documentation page here.

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