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Cisco Cisco Email Security Appliance C160 Mode D'Emploi

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20-32
Cisco AsyncOS 9.0 for Email User Guide
 
Chapter 20      Email Authentication
  Determining the Action to Take for SPF/SIDF Verified Mail
•
Pass - the client is authorized to send mail with the given identity.
•
Neutral - the domain owner does not assert whether the client is authorized to use the given identity.
•
SoftFail - the domain owner believes the host is not authorized to use the given identity but is not 
willing to make a definitive statement. 
•
Fail - the client is not authorized to send mail with the given identity. 
•
TempError - a transient error occurred during verification.
•
PermError - a permanent error occurred during verification. 
Using the spf-status Filter Rule in the CLI
The following example shows the 
spf-status
 message filter in use:
skip-spam-check-for-verified-senders:
     if (sendergroup == "TRUSTED" and spf-status == "Pass"){
         skip-spamcheck();
     }
quarantine-spf-failed-mail:
     if (spf-status("pra") == "Fail") {
         if (spf-status("mailfrom") == "Fail"){
             # completely malicious mail
             quarantine("Policy");
         } else {
           if(spf-status("mailfrom") == "SoftFail") {
             # malicious mail, but tempting
             quarantine("Policy");
           }
         }
     } else {
       if(spf-status("pra") == "SoftFail"){
         if (spf-status("mailfrom") == "Fail"
                 or spf-status("mailfrom") == "SoftFail"){
             # malicious mail, but tempting