Exchange 2007 server global message size limits in a mix Exchange 2003/2007 environment.
If you setup your first Exchange 2007 server , global message size limits are configured as follows:
Outgoing message size : 10240 KB
Incoming message size : 10240 KB
Maximum number of recipients : 5000
The settings can be configured with Exchange 2003 Exchange System Manager. However, it cannot be changed by Exchange 2007 Exchange Management Console or the Exchange Management Shell directly.
In order to change these without Exchange 2003 Management Tools, you can use ADSI Edit to change the following values.
delivContLength Valid input for this parameter is 0 to 2097151 KB.
submissionContLength Valid input for this parameter is 0 to 2097151 KB.
msExchRecipLimit Valid input for this parameter is 0 to 2147483647 recipients.
Brief steps in modifying the global message size limits:
1. In Windows 2003 server CD, under the folder “SUPPORT”, “TOOLS”, extract the files “adsiedit.msc” and “adsiedit.dll” from the file “SUPPORT.CAB”.
2. Copy the above the two file to “C:\WINDOWS\System32”.
3. Click “Start”, “Run” and enter “regsvr32 adsiedit.dll”.
4. Double click on “adsiedit.msc”.
5. Expand “CN=Configuration,DC=easypass.com,DC=com”, “CN=Services”, “CN=Microsoft Exchange”, “CN=EP”, “CN=Global Settings”.
6. Right click “CN=Message Delivery” and select “Properties”.
7. Select the desired entry and click “Edit” to change the value.
You may need to wait some time before the configured settings become effective.