Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
Chapter 1 Customizing Listeners
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Cisco IronPort AsyncOS 7.1 for Email Advanced Configuration Guide
OL-22164-02
Loose Mode
The loose parser is basically the existing behavior from previous versions of
AsyncOS. It does its best to “find” an email address and:
AsyncOS. It does its best to “find” an email address and:
–
Ignores comments. It supports nested comments (anything found in
parenthesis) and ignores them.
parenthesis) and ignores them.
–
Does not require angle brackets around email addresses provided in
“RCPT TO” and “MAIL FROM” commands.
“RCPT TO” and “MAIL FROM” commands.
–
Allows multiple nested angle brackets (it searches for the email address
in the deepest nested level).
in the deepest nested level).
Additional Options
In addition to the two parsing modes, you can specify behavior for the following
additional items listed in
additional items listed in
Table 1-3
SMTP Address Parsing Additional Options
Option
Description
Default
Allow 8-bit
username
username
If enabled, allow 8-bit characters in the username
portion of the address without escaping.
portion of the address without escaping.
on
Allow 8-bit
domain
domain
If enabled, allow 8-bit characters in the domain
portion of the address.
portion of the address.
on