none
Exchange 2010 - Message Size Limits; Error or normal behaviour.

    Question

  • Hi

    Could somebody help me clarify an issue that has recently arisen.

    Global Transport Settings are at 100MB for sending and receipt of mail.

    Local Hub Receive connectors (default and client) are set at 20MB. These are the only receive connectors enabled on the Hub servers. 

    Local users can send attachments up to 100MB. Is this correct? I was under the impression that the hub connectors override the global setting.

    Thanks

    Tuesday, April 26, 2016 2:00 PM

Answers

  • Hi,

    Refer to this document for more information about message size limit

    https://technet.microsoft.com/en-us/library/bb124345%28v=exchg.141%29.aspx

    Global limits are used when Exchange Server 2003 servers coexist with your Exchange 2010 deployment.

    And the message size limit precedence is as follows: User Send Limit > Receive Connector > Organizational limits > Send Connector > User Receive Limit

    For example, if message size limit on user is configured to unlimited, then this user can send messages of any size. But this message will be restricted by other limit. So, in your case, after that user send attachment up to 100MB, does the recipient receive that message?

    Best Regards.


    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com

    Lynn-Li
    TechNet Community Support

    Wednesday, April 27, 2016 2:45 AM
    Moderator

All replies

  • Why is the global set to 100MB and the connectors set to 20MB?

    Blog:    Twitter:   

    Tuesday, April 26, 2016 3:11 PM
  • Hi there, well, you got a missing configuration there, because a 100MB email will impact your server, even to just one recipient. you must consider BOX, DROPBOX or ONEDRIVE to handle this file size, or even implement an FTP server. because the SMTP around the globe works between 10 and 30 MB. by the way, you can have a rapidly storage consumption handling this messages sizes.

    invite your users to share links to shared repositories, sharepoint documents, or public storage services. but you soon will have a pain in your back if you keep this working as you got it.


    Fabián A. Campo H. Consultor tecnico @ GLUP. MCT MCP MCTS MCSA HP-APS Bogotá, Colombia


    Tuesday, April 26, 2016 3:31 PM
  • Hi,

    Refer to this document for more information about message size limit

    https://technet.microsoft.com/en-us/library/bb124345%28v=exchg.141%29.aspx

    Global limits are used when Exchange Server 2003 servers coexist with your Exchange 2010 deployment.

    And the message size limit precedence is as follows: User Send Limit > Receive Connector > Organizational limits > Send Connector > User Receive Limit

    For example, if message size limit on user is configured to unlimited, then this user can send messages of any size. But this message will be restricted by other limit. So, in your case, after that user send attachment up to 100MB, does the recipient receive that message?

    Best Regards.


    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com

    Lynn-Li
    TechNet Community Support

    Wednesday, April 27, 2016 2:45 AM
    Moderator