Blocking Email Addresses

[Admin]

NT4 sp6a Exchange 5.0 SP2 Antigen   Is there a way I can easily block incoming Emails from an address or domain. One of our staff is receiving Emails from a very dubious source and whilst we could create a rule for her in Outlook I want them "zapped" before they hit the desktop.   I've checked delivery restrictions and this appears to only apply to outgoing mail.   Yup I know it's an old version of exchange, but we're a very small installation (25 users) and I'm just starting to plan a migration to SBS 2000 as I need to leave the system easy to maintain for the next person to look after and what I inherited was a loads worse than it is now!   Any help (constructive!) welcome...   Adam Buckland.   List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm