May
17

How to set size limits for messages

There are 4 ways of setting the size limits for messages in Exchange Server. Depending on the settings you select, it can be global or individual.

  • Global Setting
  • Connector Setting
  • SMTP Virtual Server Setting
  • User Mailbox Setting

1. Global Setting

As the name implies, this is a global setting that will change every mailboxes throughout the enterprise. Please note that the this can be overwritten by a user mailbox settings. This can be implemented by the following steps.

  • Start Exchange System Manager. (Click on  Start, Programs, Microsoft Exchange, and then System Manager)
  • Expand Global Settings.
  • Right-click Message Delivery, and then click Properties.
  • Click the Default tab to configure the global settings.

2. Connector Setting

This can be implemented by specific connector. For example, if you have 5 connectors in an Exchange server organization, then you can have 5 different message size limitation. This can be a great tool for a domain you exchange big files with. You can implement this setting by the following way.

  • Click StartPrograms, Microsoft Exchange, and then System Manager.
  • Expand Administrative Groups, and then expand Administrative Group Name, where Administrative Group Name is the name of your administrative group.
  • Expand Routing Groups, and then expand Routing Group Name, where Routing Group Name is the name of your routing group.
  • Expand Connectors, right-click the connector that you want to configure, and then click Properties.
  • On the Content Restrictions tab, under Allowed sizes, click to select the Only messages less than (KB) check box, and then type the size (in KB) that you want to allow.

3. SMTP Virtual Server Setting

As we saw earlier with the connectors, you can have as many SMTP server you want for various purposes. You can implement this by following the steps outlined below.

  • Click Start, Programs, Microsoft Exchange, and then System Manager.
  • Expand Administrative Groups, and then expand Your Administrative Group Name, where Your Administrative Group Name is the name of your administrative group.
  • Expand Servers, and then expand Your Server Name, where Your Server Name is the name of your server.
  • Expand Protocols, and then expand the SMTP node.
  • Right-click SMTP Virtual Server Name, where SMTP Virtual Server Name is the name of your SMTP virtual server, and then click Properties.
  • Click the Messages tab to set the maximum size that you want to allow.

4. User Mailbox Setting

As the name implies, you can allow a user to send or recieve more than the allowed in an organization as I mentioned earlier. You can implement this by following the steps outlined below.

  • Start the Active Directory Users and Computers snap-in, and then locate the user account that you want to configure.
  • Right-click the user’s account, and then click Properties.
  • Click the Exchange General tab, and then click Delivery Restrictions to set the maximum size that you want to allow.

 By the way, Senders may receive a non-delivery report (NDR) that is similar to the following example if their messages are larger than their size limits:

Your message did not reach some or all of the intended recipients.

Subject: Test
Sent: 10/11/2010 1:32 PM
The following recipient(s) could not be reached:
Test Recipient on 10/11/2010 1:32 PM
This message is larger than the current system limit or the recipient’s mailbox is full. Create a shorter message body or remove attachments and try sending it again.
<server.domain.com #5.2.3>

 

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