Exchange 2013 and O365 Hybrid - mail attachment size limit increase for user on-prem and online


  • How to increase mail attachment size for on-premise and online users who are placed in an Hybrid environment.

    The users at on-premise has 10mb limit I used this command to increase it to 30MB even then the attachment is not received

                      Set-Mailbox joe.frixon -MaxSendSize 30mb -MaxReceiveSize 30mb

    Even the same applies for an user who is already been migrated to a office 365. The default setting shows 35Mb enabled but the user is not receiving any attachment beyond 10MB

    This message
    wasn't delivered to anyone because it's too large. The limit is 10 MB. This
    message is 21 MB.

    Is there any specific settings need to be configured. Please help.

    Joe Frixon

    Friday, October 23, 2015 8:23 AM


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