IronPort - Configuration Guide - AsyncOS 7.6.1

DoS attack Denial of Service attack, can also be in the form of DDos (Distributed Denial of
Service Attack). An attack on a network or computer, the primary aim of which
is to disrupt access to a given service.
DSN Delivery Status Notification, a bounced message.
E
Email Security
Manager
OL-25136-01
A single, comprehensive dashboard to manage all email security services and
applications on IronPort appliances. Email Security Manager allows you to
manage Outbreak Filters, Anti-Spam, Anti-Virus, and email content policies —
on a per-recipient or per-sender basis, through distinct inbound and outbound
policies. See also Content Filters.
Envelope Recipient The recipient of an email message, as defined in the RCPT TO: SMTP command.
Also sometimes referred to as the “Recipient To” or “Envelope To” address.
Envelope Sender The sender of an email message, as defined in the MAIL FROM: SMTP
command. Also sometimes referred to as the “Mail From” or “Envelope From”
address.
F
False Negative A spam message or a message containing a virus or a DLP violation that was not
detected as such.
False Positive A message falsely categorized as spam or as containing a virus or DLP violation.
Fully-Qualified
Domain Name
(FQDN)
H
Hard Bounced
Message
A domain name including all higher level domain names up to the top-level
domain name; for example: mail3.example.com is a fully qualified domain
name for the host at 192.168.42.42; example.com is the fully qualified domain
name for the example.com domain. The fully qualified domain name must be
unique within the Internet.
A message that is permanently undeliverable. This can happen during the SMTP
conversation or afterward.
HAT Host Access Table. The HAT maintains a set of rules that control incoming
connections from remote hosts for a listener. Every listener has its own HAT.
HATs are defined for public and private listeners, and contain mail flow policies
and sender groups.
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
Glossary
GL-3