Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
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Cisco AsyncOS 9.5 for Email User Guide
Chapter 26 LDAP Queries
Configuring AsyncOS for SMTP Authentication
Figure 26-12
SMTP Authentication Query
When an SMTPAUTH profile has been configured, you can specify that the listener uses that query for
SMTP authentication.
SMTP authentication.
SMTP Authentication via Second SMTP Server (SMTP Auth with Forwarding)
You can configure the appliance to verify the username and password that have been provided to another
SMTP authenticated conversation with a different SMTP server.
SMTP authenticated conversation with a different SMTP server.
The authenticating server is not the server that transfers mail; rather, it only responds to SMTP
Authentication requests. When authentication has succeeded, the SMTP transfer of mail with the
dedicated mail server can proceed. This feature is sometimes referred to as “SMTP Authentication with
forwarding” because only the credentials are forwarded (or “proxied”) to another SMTP server for
authentication.
Authentication requests. When authentication has succeeded, the SMTP transfer of mail with the
dedicated mail server can proceed. This feature is sometimes referred to as “SMTP Authentication with
forwarding” because only the credentials are forwarded (or “proxied”) to another SMTP server for
authentication.
Procedure
Step 1
Choose Network > SMTP Authentication.
Step 2
Click Add Profile...
Step 3
Enter a unique name for the SMTP authentication profile.
Step 4
For the Profile Type, select Forward.
Step 5
Click Next.
Step 6
Enter the hostname/IP address and port of the forwarding server. Select a forwarding interface to use for
forwarding authentication requests. Specify the number of maximum simultaneous connections. Then,
you can configure whether TLS is required for connections from the appliance to the forwarding server
You can also select a SASL method to use (PLAIN or LOGIN), if available. This selection is configured
for each forwarding server.
forwarding authentication requests. Specify the number of maximum simultaneous connections. Then,
you can configure whether TLS is required for connections from the appliance to the forwarding server
You can also select a SASL method to use (PLAIN or LOGIN), if available. This selection is configured
for each forwarding server.
Step 7
Submit and commit your changes.
Step 8
After creating the authentication profile, you can enable the profile on a listener. See
for more information.