Microsoft Exchange Server 2000 filter e-mails Spam.
 

I Have Microsoft Exchange Server 2000 and I do not obtain to activate the
filter of e-mails Spam.
When I try to activate of - me the following message: The filter “not
requested Advertising� is not available for the account of electrónico post
office of the Microsoft Exchange Server because it is to work online.
To activate it for this account, moves for the “Way of interchange in cache�
.... but it does not leave to modify

Somebody could help me. Thanks