¿Cómo se muestra en la lista blanca un remitente de confianza?

Pregunta

¿Cómo se muestra en la lista blanca un remitente de confianza?

Respuesta

En el dispositivo de seguridad Cisco Email Security Appliance (ESA), agregue remitentes de confianza al grupo de remitentes WHITELIST porque este grupo de remitentes utiliza la política de flujo de correo $TRUSTED. Los miembros del grupo de remitentes WHITELIST no están sujetos a límites de velocidad y el contenido de dichos remitentes no se analiza con el motor Cisco IronPort AntiSpam, pero el software Sophos Anti-Virus lo sigue analizando.

Nota: de forma predeterminada, el análisis antivirus está activado, pero Anti-Spam está desactivado.

Para incluir en la lista blanca a un remitente, agregue el remitente al grupo de remitentes WHITELIST de la tabla de acceso de host (HAT). Puede configurar HAT a través de la GUI o la CLI.

Desde la GUI

1. Haga clic en la ficha Políticas de correo.
2. En la sección Tabla de Acceso al Host, seleccione Descripción General de HAT,
3. En la parte derecha, asegúrese de que el receptor de correo entrante está seleccionado actualmente,
4. En la columna Grupo de remitentes siguiente, haga clic en WHITELIST,
5. Haga clic en el botón Agregar remitente situado cerca de la mitad inferior de la página.
6. Introduzca la dirección IP o el nombre de host que desea incluir en la lista blanca en el primer campo.

Cuando termine de agregar entradas, haga clic en el botón Enviar. Recuerde hacer clic en el botón Commit Changes para guardar los cambios.

Desde la CLI

example.com> listenerconfig
Currently configured listeners:
1. InboundMail (on PublicNet, 172.19.1.80) SMTP TCP Port 25 Public
2. OutboundMail (on PrivateNet, 172.19.2.80) SMTP TCP Port 25 Private
Choose the operation you want to perform:
- NEW - Create a new listener.
- EDIT - Modify a listener.
- DELETE - Remove a listener.
- SETUP - Change global settings.
[]> edit
Enter the name or number of the listener you wish to edit.
[]> 1
Name: InboundMail
Type: Public
Interface: PublicNet (172.19.1.80/24) TCP Port 25
Protocol: SMTP
Default Domain:
Max Concurrency: 1000 (TCP Queue: 50)
Domain Map: Disabled
TLS: No
SMTP Authentication: Disabled
Bounce Profile: Default
Use SenderBase For Reputation Filters and IP Profiling: Yes
Footer: None
LDAP: Off

Choose the operation you want to perform:
- NAME - Change the name of the listener.
- INTERFACE - Change the interface.
- LIMITS - Change the injection limits.
- SETUP - Configure general options.
- HOSTACCESS - Modify the Host Access Table.
- RCPTACCESS - Modify the Recipient Access Table.
- BOUNCECONFIG - Choose the bounce profile to use for messages injected on this
listener.
- MASQUERADE - Configure the Domain Masquerading Table.
- DOMAINMAP - Configure domain mappings.
[]> hostaccess
Default Policy Parameters
=========================
Allow TLS Connections: No
Allow SMTP Authentication: No
Require TLS To Offer SMTP authentication: No
Maximum Concurrency Per IP: 1,000
Maximum Message Size: 100M
Maximum Messages Per Connection: 1,000
Maximum Recipients Per Message: 1,000
Maximum Recipients Per Hour: Disabled
Use SenderBase For Flow Control: Yes
Spam Detection Enabled: Yes
Virus Detection Enabled: Yes
There are currently 4 policies defined.
There are currently 5 sender groups.
Choose the operation you want to perform:
- NEW - Create a new entry.
- EDIT - Modify an entry.
- DELETE - Remove an entry.
- MOVE - Move an entry.
- DEFAULT - Set the defaults.
- PRINT - Display the table.
- IMPORT - Import a table from a file.
- EXPORT - Export the table to a file.
- CLEAR - Remove all entries.
[]> edit
1. Edit Sender Group
2. Edit Policy
[1]> 1
Currently configured HAT sender groups:
1. WHITELIST (My trusted senders have no Brightmail or rate limiting)
2. BLACKLIST (Spammers are rejected)
3. SUSPECTLIST (Suspicious senders are throttled)
4. UNKNOWNLIST (Reviewed but undecided, continue normal acceptance)
5. (no name, first host = ALL) (Everyone else)
Enter the sender group number or name you wish to edit.
[]> 1

Choose the operation you want to perform:
- NEW - Add a new host.
- DELETE - Remove a host.
- MOVE - Reorder the hosts.
- POLICY - Change the policy settings and options.
- PRINT - Display the current definition.
- RENAME - Rename this sender group.
[]> new
Enter the hosts to add. CIDR addresses such as 10.1.1.0/24 are allowed. IP
address ranges such as 10.1.1.10-20 are allowed. IP subnets such as 10.2.3. are
allowed. Hostnames such as crm.example.com are allowed. Partial hostnames such
as .example.com are allowed.
Ranges of SenderBase Reputation scores such as SBRS[7.5:10.0] are allowed.
SenderBase Network Owner IDs such as SBO:12345 are allowed.
Remote blacklist queries such as dnslist[query.blacklist.example] are allowed.
Separate multiple hosts with commas
[]>

Recuerde ejecutar el commit comando para guardar los cambios.

Información Relacionada

• Dispositivo de seguridad Cisco Email Security Appliance: guías del usuario final
• Soporte Técnico y Documentación - Cisco Systems