Cisco Cisco Email Security Appliance X1070 User Guide
Chapter 5 Email Authentication
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Cisco IronPort AsyncOS 7.3 for Email Advanced Configuration Guide
OL-23081-01
Figure 5-15
Enabling SPF/SIDF in the Mail Flow Policy
Step 5
Set the level of conformance (the default is SIDF-compatible). This option allows
you to determine which standard of SPF or SIDF verification to use. In addition
to SIDF conformance, you can choose SIDF-compatible, which combines SPF
and SIDF.
you to determine which standard of SPF or SIDF verification to use. In addition
to SIDF conformance, you can choose SIDF-compatible, which combines SPF
and SIDF.
Table 5-1
SPF/SIDF Conformance Levels
Conformance Level
Description
SPF
The SPF/SIDF verification behaves according to
RFC4408.
RFC4408.
- No purported responsible address (PRA) identity
verification takes place.
verification takes place.
NOTE: Select this conformance option to test against
the HELO identity.
the HELO identity.