Group Emails SPAM

[Shahul Minhajudeen]

Hi,

We received a bounced email claiming to be sent from our email address group@domain.com. This address belongs to a group at our end and hence cannot send an email to recipients. How we can protect emails from these kind of attack. Please Advise.

Regards,

SM.

[#2]

Like you would from any other type of spoofing attack: deploy SPF/DKIM/DMARC and follow Microsoft best practices: https://support.office.com/en-us/article/anti-spoofing-protection-in-office-365-d24bb387-c65d-486e-9...