Cisco Cisco Email Security Appliance C160 Mode D'Emploi

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Cisco AsyncOS 8.5 for Email User Guide

Chapter 7 Defining Which Hosts Are Allowed to Connect Using the Host Access Table (HAT)

Verifying Senders

Step 2

Click Find.

Figure 7-10

Searching for Matching Entries in the Exception Table

If the address matches any of the entries in the table, the first matching entry is displayed:

Figure 7-11

Listing Matching Entries in the Exception Table

Testing Your Settings for Messages from Unverified Senders

Now that you have configured sender verification settings, you can verify the behavior of your appliance.

Note that testing DNS-related settings is beyond the scope of this document.

Sending a Test Message with a Malformed MAIL FROM Sender Address

While it may be difficult to test the various DNS-related settings for your THROTTLED policy, you can
test the malformed MAIL FROM setting.

Procedure

Step 1

Open a Telnet session to your appliance.

Step 2

Use SMTP commands to send a test message with a malformed MAIL FROM (something like “admin”
without a domain).

Note

If you have configured your appliance to use a default domain or to specifically allow partial
domains when sending or receiving email or if you have enabled address parsing (see the
“Configuring the Gateway to Receive Email” chapter) you may not be able to create, send, and
receive an email with a missing or malformed domain.