Cisco Cisco Email Security Appliance C160 ユーザーガイド
9-38
AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Chapter 9 Using Message Filters to Enforce Email Policies
Message Filter Rules
}
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
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");