Cisco Cisco Email Security Appliance C190 用户指南
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User Guide for AsyncOS 9.7 for Cisco Email Security Appliances
Chapter 21 Email Authentication
Determining the Action to Take for SPF/SIDF Verified Mail
The following example shows a header added for a message that passed the SPF/SIDF check:
Note
The
spf-status
and
spf-passed
filter rules use the received-SPF header to determine the status of the
SPF/SIDF verification.
Determining the Action to Take for SPF/SIDF Verified Mail
When you receive SPF/SIDF verified mail, you may want to take different actions depending on the
results of the SPF/SIDF verification. You can use the following message and content filter rules to
determine the status of SPF/SIDF verified mail and perform actions on the messages based on the
verification results:
results of the SPF/SIDF verification. You can use the following message and content filter rules to
determine the status of SPF/SIDF verified mail and perform actions on the messages based on the
verification results:
•
spf-status
. This filter rule determines actions based on the SPF/SIDF status. You can enter a
different action for each valid SPF/SIDF return value.
•
spf-passed
. This filter rule generalizes the SPF/SIDF results as a Boolean value.
Note
The
spf-passed
filter rule is only available in message filters.
You can use the
spf-status
rule when you want to address more granular results, and use the
spf-passed
rule when you want to create a simple Boolean.
Related Topics
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Verification Results
If you use the
spf-status
filter rule, you can check against the SPF/SIDF verification results using the
following syntax:
If you want a single condition to check against multiple status verdicts, you can use the following syntax:
Received-SPF: Pass identity=pra; receiver=box.example.com;
client-ip=1.2.3.4; envelope-from="alice@fooo.com";
x-sender="alice@company.com"; x-conformance=sidf_compatible
if (spf-status == "Pass")
if (spf-status == "PermError, TempError")