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Exchange Online Distribution Group Limits

I want to make sure I understand Exchange Online Distribution Group Recipient Limits - We're in Hybrid using the latest version of Azure AD connector

  • Maximum number of distribution group members - Since I'm using Azure AD Connector the maximum number of users in a Distribution Groups that has Delivery Management (specifying a list of senders) is 50,000 users and that's 50k users is aggregate of all nested groups?
  • Limit sending messages to large distribution group - Since I'm using Delivery Management (specifying a list of senders) on my large Distribution groups and using Azure AD Connector I can have up to 50,000 user in a single un-nested group?
  • Maximum message size for large distribution groups - this means that a single message with attachment, embedded images or other media types can't exceed 2MB?

Thank You,

Larry

Answer
Answer

Hi Larry_904,

Yes, you are right. And, for more information, you can refer to https://technet.microsoft.com/en-us/library/exchange-online-limits.aspx?f=255&MSPPError=-2147217396 (Distribution group limits across Office 365 options).

Regards,
Alan

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Question Info

Last updated July 20, 2023 Views 15,767 Applies to: