Blocking Senders in Microsoft Outlook Express
Outlook Express allows you to block messages from a particular sender or domain. The domain is the name following the @ symbol in an e-mail address. These options give you flexibility in choosing which e-mails will reach your Inbox.
When you block a sender or domain, no e-mail or news message from that sender or domain will arrive in your Inbox. E-mail from blocked senders goes directly into your Deleted Items folder.
From your e-mail Inbox, select a message from a sender you want to block.
On the Message menu, choose Block Sender.
Whenever future messages are received from the blocked sender, they will be sent to the Deleted Items folder immediately.
Notes
Blocking a sender applies to standard POP mail only. It does not apply to HTTP mail (Hotmail) or IMAP messages.
To remove a name from the Blocked Senders list, click the Tools menu, point to Message Rules, and then click Blocked Senders List.