Cisco Cisco Email Security Appliance C160 Guía Del Usuario
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Cisco AsyncOS 8.5.6 for Email User Guide
Chapter 9 Using Message Filters to Enforce Email Policies
Message Filter Actions
The Envelope Sender parameter may be any valid email address, or alternatively, may be the action
variable
variable
$EnvelopeFrom
, which will set the return path of the message to the same as the original
message.
This example expands the previous one by setting the subject to be
[Bcc] <original subject>
, and the
return path set to
badbounce@home.org
:
The alt-mailhost is the fourth parameter:
Warning
The
Bcc()
,
notify()
, and
bounce()
filter actions can allow viruses through your network. The blind
carbon copy filter action creates a new message which is a full copy of the original message. The
notify filter action creates a new message that contains the headers of the original message. While
it is rare, headers can contain viruses. The bounce filter action creates a new message which
contains the first 10k of the original message. In all three cases, the new message will not be
processed by anti-virus or anti-spam scanning.
notify filter action creates a new message that contains the headers of the original message. While
it is rare, headers can contain viruses. The bounce filter action creates a new message which
contains the first 10k of the original message. In all three cases, the new message will not be
processed by anti-virus or anti-spam scanning.
To send to multiple hosts, you can call the
bcc()
action multiple times:
momFilter:
if ((mail-from == '^johnny$') and (rcpt-to == '^sue$'))
{
bcc('mom@home.org', '[Bcc] $Subject', 'badbounce@home.org');
}
momFilterAltM:
if ((mail-from == '^johnny$') and (rcpt-to == '^sue$'))
{
bcc('mom@home.org', '[Bcc] $Subject', '$EnvelopeFrom',
'momaltmailserver.example.com');
}
multiplealthosts:
if (recv-listener == "IncomingMail")
{
insert-header('X-ORIGINAL-IP', '$remote_ip');
bcc ('$EnvelopeRecipients', '$Subject', '$EnvelopeFrom', '10.2.3.4');
bcc ('$EnvelopeRecipients', '$Subject', '$EnvelopeFrom', '10.2.3.5');