Setting Delivery Restrictions

Because e-mail messages sent to or from a public folder are routed as e-mail and not as messages posted directly to the folder, Exchange provides an additional set of size and access restrictions for mail-enabled public folders. These options help you control e-mail traffic to and from the public folders.

To limit the size of both incoming and outgoing messages for a public folder, or to choose to accept or reject messages from specific users for the public folder, click Delivery Restrictions on the Exchange General tab of the public folder's Properties dialog box. You can then set message limits in the Delivery Restrictions dialog box.

The Delivery Restrictions dialog box for a mail-enabled public folder

In the Delivery Restrictions dialog box, you can set the following options:

• Sending message size   Limits the size of messages that are sent using the e-mail alias of the public folder. You can use the default size limit, or you can type a maximum message size in the Maximum KB box. The maximum message size for outgoing messages can be a value from 1 to 2097151.

  Note

  Specifying too large a value for Sending message size can increase traffic on your network. Additionally, large messages can take a long time to download over slower network connections. Use a value that is appropriate for your network's usage pattern.

• Receiving message size   Limits the size of messages that are sent to the public folder. You can use the default size limit, or you can type a maximum message size in the Maximum KB box. The maximum message size for incoming messages can be a value from 1 to 2097151.

  Note

  Specifying too large a value for Receiving message size can increase traffic on your network. Additionally, large messages can take a long time to download over slower network connections. Use a value that is appropriate for your network's usage pattern.

• Message restrictions   Specifies who can and cannot send e-mail to the folder. Choose from the following options:

  • From authenticated users only   Regardless of the type of restriction that you apply (From everyone, Only from, or From everyone except), the public folder will only accept e-mail messages from authenticated users.

  • From everyone   The public folder will accept all incoming e-mail messages.

    Important

    If you select the From everyone message restriction, any user will be able to send e-mail messages to the public folder. Use this option only when no security restrictions are required.

  • Only from   The public folder will only accept e-mail messages from the specified users. Click Add to specify a list of users.

  • From everyone except   The public folder will refuse to accept e-mail messages from the specified users. Click Add to specify a list of users.