Is it possible in Exchange 2010 to limit the size of incoming/outgoing external messages but leaving an unlimited message size for internal users?

For this purpose, I think you need configure message size limits in the Send Connector and Receive Connector option. For the solution detail, you can read this article: http://smtpport25.wordpress.com/2010/06/13/exchange-2010-allowing-high-profile-users-to-send-and-receive-bigger-size-attachment-emails/Nile Jiang- Please mark the post as answer if it answers your question. http://www.usefulshare.com

Hi, It is possible to limit the size of incoming/outgoing external messages but leaving an unlimited message size for internal users. As the below article in that link said, there are two ways to achieve, powershell and EMC. In EMC, the operation using transport rule is more vivid. But in powershell, the code of configuring message size limits in send connector and receive connector will be simple for those skillful. I recommen you to use powershell. For the external , you can try the following: Get-SendConnector | Set-SendConnector –MaxMessageSize xxMB Get-ReceiveConnector | Set-ReceiveConnector –MaxMessageSize xxxMB For the internal, you can try the following: Set-TransportConfig -MaxReceiveSize Set-TransportConfig -MaxSendSize If there is Edge Transport server, you need run the following in it: Get-ReceiveConnector | Set-ReceiveConnector –MaxMessageSize xxxxMB If you have synchronized Edge Transport server into AD, you should run the following in Hub Transport server: Get-SendConnector | Set-SendConnector –MaxMessageSize xxxxxMB For more information, you can also refer to the following article: Manage Message Size Limits: http://technet.microsoft.com/en-us/library/bb124345(EXCHG.80).aspx How to Configure Message Size Limits for Internal Routing: http://technet.microsoft.com/en-us/library/bb738125(EXCHG.80).aspx Hope this helps. Thanks Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Yes, This is possible. Sophia has provided enough information to do this. Also have a look of below article posted by Amit Tank. It has very good info in detail. This is for Exchange 2007 but it also same for exchange 2010. http://exchangeshare.wordpress.com/2008/04/24/exchange-2007-where-to-set-message-mail-size-limit/ Anil