Azure Communications and Email Services Spam Filtering
I have been playing around with the Azure Email Services as it seems like a good solution (once out of preview) for automated emailing from Function Apps.
Everything seems to be setup correctly,
- I have a verified custom domain
- All DNS entries are setup for SPF/DKIM
- Sender name and address configured
- I have connected the domain to a Communications Service
Manually sending an email through a test app (WPF and Azure SDK with connection string) works fine and the email arrives/is signed
As soon as I automate the process and use a queue triggered function to send the email, I hit issues. The email sends fine but Exchanges default policies quarantine the message as spam under the phishing category.
Has anyone else encountered this? I am not really sure how to proceed really as the email is being signed and verified.