Cisco Cisco Email Security Appliance C160 用户指南
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Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
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Chapter 4 Validating Recipients Using an SMTP Server
Enabling the SMTP Call-Ahead Server Profile on a
Public Listener
Public Listener
Once you create the SMTP Call-Ahead Server Profile, you need to enable it on a
listener to allow the listener to validate incoming mail via the SMTP server.
SMTP call-ahead functionality is only available on public listeners, as recipient
validation is not necessary for private listeners.
listener to allow the listener to validate incoming mail via the SMTP server.
SMTP call-ahead functionality is only available on public listeners, as recipient
validation is not necessary for private listeners.
To enable an SMTP Call-Ahead Server Profile on a listener:
Step 1
Go to Network > Listeners.
Step 2
Click the name of the listener where you want to enable SMTP call-ahead
functionality.
functionality.
The Edit Listener page opens.
Step 3
In the SMTP Call Ahead Profile field, select the SMTP Call-Ahead profile you
want to enable.
want to enable.