Share
ReportWhen sending test marketing emails to a colleague, the delivery fails with bounce category: multiplesoftbounces, and email bounce reason: smtp;550 Rejected by header based Anti-Spoofing policy: event@company.com.au - community.mimecast.com/.../DOC-1369 [2Jgldvk_P6yuevZARv890w.au74]
The address in the bounce message event@company.com.au is not a valid email address at our company, and it is not the marketing email sender. This email address doesn't appear in the Mimecast Anti-Spoofing policies either. Could this email address be somewhere in Dynamics?
I opened a ticket with Mimecast 14 days ago, but we have been unable to resolve this so far.
There is no record of the email being rejected within Mimecast, and Mimecast support suggest it never reached Mimecast.
Other staff can receive the test marketing emails without issue, suggesting Mimecast Anti-Spoofing policies are allowing the emails through.
Troubleshooting already complete (we are crm6):
- Mimecast anti-spoof policies added for email sender address already exists
- Mimecast anti-spoof policies added for the non-valid event@company.com.au address
- Mimecast anti-spoof policies added for the IP address of Dynamics365ForMarketingEmail.AustraliaSoutheast (13.77.51.0/24) from https://docs.microsoft.com/en-gb/power-platform/admin/online-requirements#ip-addresses-and-urls
I have already trawled the forums, but still unable to find a resolution.
Can we trace the email from Dynamics?
Any suggestions?
All responses (
Answers (
292,575
