To block a sander in Exchange server 2007 never been easier, all you have to do is add the the sander to the Exchange Server 2007 Anti Span built in function.
To do that:
- Log In to the Exchange Management Console, click Edge Transport.
- Click on the Anti-spam tab, and double click on Sender Filtering.
- Click the Blocked Senders tab, and then click Add.
select the Individual e-mail address option, and then type the e-mail address.
4. Click Apply to save your changes.