Why make this declaration in Microsoft 365?
Legitimate email services modify messages (e.g., adding advanced features) before they are delivered to your Microsoft 365 organization.
The modification of incoming messages in transit can and will likely result in the following email authentication failures in Microsoft 365:
SPF fails due to the new message source (IP address).
DKIM fails due to content modification.
DMARC fails due to SPF and DKIM failures.
Solution:
Add e-securemail as a trusted ARC Sealer and pass authentication using ARC authentication for your Microsoft 365 organization.
Go to the email authentication settings.
Add e-securemail as a trusted ARC Sealer and pass authentication using ARC authentication for your Microsoft 365 organization.
Go to the email authentication settings.
- Go to https://security.microsoft.com/authentication
- Click on "ARC"
- Edit or add in Trusted Sealers
- Enter
security-mail.net