#### Setting Up Server-wide Black and White Lists

To block mail from specific domains:

1. Click the Server shortcut in the navigation pane.
2. Click the Mail icon in the Services group.
3. Click the Black List tab.
4. Click the Add Domain icon.
5. Specify the name of the domain from which you do not want to receive e-mail. For example, 'evilspammers.net'.
6. Click OK.
7. Repeat steps from 4 to 6 to add as many domains as required.

To allow mail reception from specific domains or networks:

1. Click the Server shortcut in the navigation pane.
2. Click the Mail icon in the Services group.
3. Click the White List tab.
4. Click the Add Network icon.
5. Specify an IP address or range of IP addresses from which mail must always be accepted.
6. Click OK.
7. Repeat steps from 4 to 6 to add as many addresses as required.