PROBLEM:
By adding a whitelist or a blacklist entry and testing it is not working.
SOLUTION:
Whitelist & Blacklists entries are automatically reloaded into the antispam engine every 10 minutes, so basically if you try a new entry immediatly the new setting is simply not yet effective.To force an imemdiate update of whitelists and blacklists entries, restart the MailScanner Engine under menu’ System->Networking and System Services->Core Services.