Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

Página de 1138
 
9-96
Cisco AsyncOS 8.5 for Email User Guide
 
Chapter 9      Using Message Filters to Enforce Email Policies
  Message Filter Examples
Message Filter Examples
This section contains some real world examples of filters with a brief discussion of each.
Open-Relay Prevention Filter
This filter bounces messages with addresses using 
%
, extra 
@
, and 
!
 characters in email addresses:
user%otherdomain@validdomain
user@otherdomain@validdomain:
domain!user@validdomain
- NEW - Create a new filter.
- DELETE - Remove a filter.
- IMPORT - Import a filter script from a file.
- EXPORT - Export filters to a file
- MOVE - Move a filter to a different position.
- SET - Set a filter attribute.
- LIST - List the filters.
- DETAIL - Get detailed information on the filters.
- LOGCONFIG - Configure log subscriptions used by filters.
- ROLLOVERNOW - Roll over a filter log file.
[]>
mail3.example.com> commit
Please enter some comments describing your changes:
[]> entered and enabled 3 filters: no_mp3s, mailfrompm, big_messages
sourceRouted: 
if (rcpt-to == "(%|@|!)(.*)@") {
  bounce();
}