Exchange 2016 stop spoof mail with our domain name

Pero 66 Reputation points


Our company is receiving a lot of spoof mails from various addresses. But biggest problem is these spoof mail domains are identical to our.

Today we got mail from "" with "strange" links. We can block this ip but this will not prevent another mail like "" from another ip and it's just matter of time someone clicks on something malicious.

Is it possible to block "*" mails coming from any other address then the one are in SPF or specifically defined ?


Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,206 questions
0 comments No comments
{count} votes

2 answers

Sort by: Most helpful
  1. Andy David - MVP 138K Reputation points MVP

    What are you using for anti-spam/anti-phishing?

    You really need to buy a 3rd party product or use a 3rd party SMTP gateway to accept mail first. The built-in Exchange abilities are very limited.

  2. Kael Yao-MSFT 36,516 Reputation points Microsoft Vendor

    Hi Pero.

    Please create a mail flow rule to see if it can help with this issue.
    The rule would be like:

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.