Cisco Cisco Email Security Appliance X1070 User Guide
Chapter 6 Using Message Filters to Enforce Email Policies
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Cisco IronPort AsyncOS 7.3 for Email Advanced Configuration Guide
OL-23081-01
Another Drop Spoofed Domain Filter
Summary: Anti domain spoof filter:
reject_domain_spoof:
if (recv-listener == "MailListener") {
insert-header("X-Group", "$Group");
if ((mail-from == "@test\\.mycompany\\.com") AND (header("X-Group") !=
"RELAYLIST")) {
notify("me@here.com");
drop();
strip-header("X-Group");
}
Detect Looping Filter
This filter is used to detect, stop, and determine what is causing, a mail loop. This
filter can help determine a configuration issue on the Exchange server or
elsewhere.
filter can help determine a configuration issue on the Exchange server or
elsewhere.
drop ();
}
External_Loop_Count:
if (header("X-ExtLoop1")) {
if (header("X-ExtLoopCount2")) {
if (header("X-ExtLoopCount3")) {
if (header("X-ExtLoopCount4")) {