Cisco Cisco Email Security Appliance C190 User Guide

Cisco AsyncOS 9.1 for Email 사용 설명서

9 장     메시지 필터를 사용하여 이메일 정책 적용

  메시지 필터 규칙

     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

             quarantine("Policy");

         }

       }

     }

stamp-mail-with-spf-verification-error:

     if (spf-status("pra") == "PermError, TempError"

             or spf-status("mailfrom") == "PermError, TempError"

             or spf-status("helo") == "PermError, TempError"){

         # permanent error - stamp message subject

         strip-header("Subject");

         insert-header("Subject", "[POTENTIAL PHISHING] $Subject"); }

.