ESET NOD32 ANTIVIRUS - FOR LINUX MAIL SERVERS User Manual

Chapter 5. NOD32LMS configuration
5.2. Scanning of the inbound e-mail messages
Scanning of the inbound e-mail messages is performed at the time of message transmission
between MTA and MDA (as marked by symbol S1 in figure 3-1). The generic scheme of the
process is shown in the figure 5-1.
Figure 5-1. The scheme of the inbound e-mail message delivery without (left part of the
figure) and with (right part of the figure) the NOD32 scanning.
MTA
MDA
MAILBOX
MTA
MDA
MAILBOX
NOD32MDA
NOD32D
FILE
PIPE
PIPE
FILE
FILE
The incoming e-mail is scanned by nod32mda module supported by daemon nod32d. Scanned
e-mail is afterward forwarded to the original MDA for further delivery to the MAILBOX.
As shown in the figure 5-1, the virus scanning feature can be enabled by appropriate configu-
ration setting of the MTA agent and nod32mda module. It is also apparent from the figure that
the solution is MDA independent.
Note: The majority of mail servers use procmail or maildrop (MDA). The nod32mda module
supports any MDA. The following MDAs were tested: procmail, maildrop, deliver and lo-
cal.mail.
In general, the virus scanning feature can be enabled in two ways described below.
14

ESET NOD32 ANTIVIRUS - FOR LINUX MAIL SERVERS Specifications

General

Product Name	ESET NOD32 ANTIVIRUS - FOR LINUX MAIL SERVERS
Category	Software
Supported Platforms	Linux
Real-time Protection	Yes
On-demand Scanning	Yes
Mail Server Protection	Yes
Automatic Updates	Yes
Purpose	Antivirus protection for Linux mail servers
Email Scanning	Yes
License	Commercial
Virus Signature Updates	Regular updates
Integration	Compatible with various mail servers