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MS-102 · Question #135

You have a Microsoft 365 E5 subscription that uses Microsoft Defender for Office 365 and contains a user named User1. User emails a product catalog in the PDF format to 300 vendors. Only 200 vendors…

The correct answer is A. anti-spam policies. To prevent a user from being blocked from sending emails due to high volume, you should configure anti-spam policies.

Submitted by tyler.j· Apr 18, 2026Manage security and threats by using Microsoft Defender XDR

Question

You have a Microsoft 365 E5 subscription that uses Microsoft Defender for Office 365 and contains a user named User1. User emails a product catalog in the PDF format to 300 vendors. Only 200 vendors receive the email message, and User1 is blocked from sending email until the next day. You need to prevent this issue from reoccurring. What should you configure?

Options

  • Aanti-spam policies
  • BSafe Attachments policies
  • Canti-phishing policies
  • Danti-malware policies

How the community answered

(18 responses)
  • A
    72% (13)
  • B
    6% (1)
  • C
    17% (3)
  • D
    6% (1)

Why each option

To prevent a user from being blocked from sending emails due to high volume, you should configure anti-spam policies.

Aanti-spam policiesCorrect

The issue of a user being blocked from sending email after a large send is typically caused by outbound spam policies in Exchange Online Protection (part of Defender for Office 365) detecting suspicious volume or exceeding sending limits. Adjusting these policies can prevent such legitimate senders from being blocked.

BSafe Attachments policies

Safe Attachments policies scan email attachments for malware and do not control outbound email sending limits or prevent users from being blocked for high volume.

Canti-phishing policies

Anti-phishing policies protect against phishing and impersonation attempts, which is unrelated to a user being blocked for high email sending volume.

Danti-malware policies

Anti-malware policies scan emails for malware and do not govern outbound sending limits or block users based on email volume.

Concept tested: Exchange Online Protection outbound spam policies

Source: https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/outbound-spam-policies-configure?view=o365-worldwide

Topics

#Microsoft Defender for Office 365#Anti-spam policies#Outbound email protection#Email sending limits

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