Anti-Spam in Office365

Nadhrah Nini 21 Reputation points
2021-03-11T02:34:29.243+00:00

Hi,

My company is using Microsoft Office 365 Business Standard. We have turned on anti-spam features however, there are selected users who keep receiving spam emails. Mostly the bosses.

Please advise how we can increase the security of anti-spam in Office365.

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Vasil Michev 95,666 Reputation points MVP
    2021-03-11T08:05:26.29+00:00

    There's no single answer here, it depends on the type of spam you're receiving. Purchasing a Defender for O365 (previously known as Advanced Threat Protection) subscription and leveraging the additional protection features there might be a good start: https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/office-365-atp?view=o365-worldwide

  2. Lucas Liu-MSFT 6,161 Reputation points
    2021-03-12T02:07:32.833+00:00

    Hi @Nadhrah Nini ,
    Agree with michev, and you could also use the following methods to increase your security.
    1.Please point your MX record to Microsoft 365. In order for EOP to provide the best protection, we always recommend that you have email delivered to Microsoft 365 first.

    2.Please make sure to set up the correct DNS records, including SPF, DKIM and DMARC. These DNS will help insure that messages from senders in that domain are legitimate.

    3.Please run the following command to verify that whether enable the junk email rule on a mailbox:

    Get-MailboxJunkEmailConfiguration -Identity <> | Format-List Enabled

    4.You can also create a block sedner lists based on the sender of the spam email.

    For more information you could refer to: Anti-spam protection in EOP and Create blocked sender lists in EOP

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