Руководство Пользователя для Cisco Cisco Email Security Appliance C170
1-9
Cisco IronPort AsyncOS 7.6 for Email Advanced Configuration Guide
OL-25137-01
Chapter 1 Customizing Listeners
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:
best to “find” an email address and:
–
Ignores comments. It supports nested comments (anything found in parenthesis) and ignores
them.
them.
–
Does not require angle brackets around email addresses provided in “RCPT TO” and “MAIL
FROM” commands.
FROM” commands.
–
Allows multiple nested angle brackets (it searches for the email address in the deepest nested
level).
level).
Additional Options
In addition to the two parsing modes, you can specify behavior for the following additional items listed
in
in
Table 1-3
SMTP Address Parsing Additional Options
Option
Description
Default
Allow 8-bit username
If enabled, allow 8-bit characters in the username portion of the
address without escaping.
address without escaping.
on
Allow 8-bit domain
If enabled, allow 8-bit characters in the domain portion of the
address.
address.
on