Configure Message Delivery Restrictions for a Mailbox – Exchange 2010

In the EAC, navigate to Recipients > Mailboxes.

  • In the list of user mailboxes, click the mailbox that you want to configure message delivery restrictions for, and then click Edit Edit Icon.
  • On the mailbox properties page, click Mailbox Features.
  • Under Message Delivery Restrictions, click View details to view and change the following delivery restrictions:
    • Accept messages from   Use this section to specify who can send messages to this user.
      • All senders   This option specifies that the user can accept messages from all senders. This includes both senders in your Exchange organization and external senders. This is the default option. It includes external users only if you clear the Require that all senders are authenticated check box. If you select this check box, messages from external users will be rejected.
      • Only senders in the following list   This option specifies that the user can accept messages only from a specified set of senders in your Exchange organization. Click Add Add Icon to display a list of all recipients in your Exchange organization. Select the recipients you want, add them to the list, and then click OK. You can also search for a specific recipient by typing the recipient’s name in the search box and then clicking Search Search Icon.
      • Require that all senders are authenticated   This option prevents anonymous users from sending messages to the user. This includes external users that are outside of your Exchange organization.
    • Reject messages from   Use this section to block people from sending messages to this user.
      • No senders   This option specifies that the mailbox won’t reject messages from any senders in the Exchange organization. This is the default option.
      • Senders in the following list   This option specifies that the mailbox will reject messages from a specified set of senders in your Exchange organization. Click Add Add Icon to display a list of all recipients in your Exchange organization. Select the recipients you want, add them to the list, and then click OK. You can also search for a specific recipient by typing the recipient’s name in the search box and then clicking Search Search Icon.
  • Click OK to close the Message Delivery Restrictions page, and then click Save to save your changes.

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