Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

The regular expression for the 

mail-from

 rule is case insensitive. Note that the period character is 

escaped in the following example.

The 

mail-from-group

 rule selects those messages where the Envelope Sender is found to be in an LDAP 

group given on the right side of the operator (or, in the case of inequality, where the sender’s email 
address is not in the given LDAP group). For example, the following filter immediately delivers any 
message sent by someone whose email address is in the LDAP group “KnownSenders.” 

The 

sendergroup

 message filter selects a message based on which sender group was matched in a 

listener's Host Access Table (HAT). This rule uses '==' (for matching) or '!=' (for not matching) to test 
for matching a given regular expression (the right side of the expression). For example, the following 
message filter rule evaluates to 

true

 if the sender group of the message matches the regular expression 

Internal, and, if so, sends the message to an alternate mail host. 

kremFilter:

   if (mail-from == '^admin@yourdomain\\.com$')

   {

 skip-filters();

   }

SenderLDAPGroupFilter:

   if (mail-from-group == 'KnownSenders') 

   {

 skip-filters();

   }

senderGroupFilter:

      if (sendergroup == "Internal")

      {

        alt-mailhost("[172.17.0.1]");

      }