Cisco Cisco Email Security Appliance C160 Mode D'Emploi

In some user environments, an LDAP directory server schema may store a “friendly name” in addition 
to a mail routing address or a local mail address. AsyncOS allows you to masquerade Envelope Senders 
(for outgoing mail) and message headers (for incoming mail, such as To:, Reply To:, From: or CC:) with 
this “friendly address” — even if the friendly address contains special characters that are not normally 
permitted in a valid email address (for example, quotation marks, spaces, and commas).

When using masquerading of headers via an LDAP query, you now have the option to configure whether 
to replace the entire friendly email string with the results from the LDAP server. Note that even with this 
behavior enabled, only the user@domain portion will be used for the Envelope Sender (the friendly name 
is illegal).

As with the normal LDAP masquerading, if empty results (zero length or entire white space) are returned 
from the LDAP query, no masquerading occurs.

To enable this feature, answer “y” to the following question when configuring an LDAP-based 
masquerading query for a listener (LDAP page or 

ldapconfig

 command): 

For example, consider the following example LDAP entry:

If this feature is enabled, an LDAP query of (mailRoutingAddress={a}) and a masquerading attribute of 
(mailLocalAddress) would result in the following substitutions: 

(mailRoutingAddress={a})

(proxyaddresses=smtp:{a})

(mail={a})

(mailAlternateAddress={a})

(mailEquivalentAddress={a})

(mailForwardingAddress={a})

(mailRoutingAddress={a})

Do you want the results of the returned attribute to replace the entire 

friendly portion of the original recipient? [N]

mailRoutingAddress

admin\@example.com

mailLocalAddress

joe.smith\@example.com

mailFriendlyAddress

“Administrator for example.com,” <joe.smith\@example.com>

admin@example.com

From: “Administrator for 
example.com,” 
<joe.smith@example.com>

MAIL FROM: 
<joe.smith@example.com>