Forum Discussion

virtual-tech's avatar
virtual-tech
Brass Contributor
Oct 10, 2023

email forwarding failed in DMARC

My primary office Corp is using Exchange online and we acquired another company with exchange online as well. In the new company tenant,  the mailboxes were converted to shared mailboxes with email forwarding to CORP. Some of the emails fail to be delivered because of DMARC.The error is 550 5.7.509 DMARC verification fails. In CORP we have v=DMARC1; p=quarantine; pct=100;
Does anyone have any suggestion?
    • virtual-tech's avatar
      virtual-tech
      Brass Contributor

      Kidd_Ip Hi which additional domains? The new tenant company domains users are receiving the emails before they are forwarded to the corp o365 tenant?

Resources