ESET NOD32 ANTIVIRUS - FOR LINUX MAIL SERVERS - Content Filtering in MTA Sendmail

Chapter 5. NOD32LMS configuration
The value of the parameter myhostname must differ from that set in postfix (postconf myhost-
name), otherwise a loop is detected (by postfix) and the e-mail is rejected.
Finally, add
postconf -e "content_filter = smtp:localhost:2526"
into the postfix configuration file (/etc/postfix/main.cf). The entire process is illustrated in fig-
ure 5-3.
Figure 5-3. Bidirectional scanning scheme of an nod32smtp module working as a content
filter.
CLEANUP
SMTPD
QUEUE
SMTP
LOCAL
SMTP
SMTPD
PICKUP
NOD32SMTP
TCP PORT 2525
TCP PORT 2526
POSTFIX
5.4.2. Content filtering in MTA Sendmail
The nod32smfi serves as a content filter for MTA Sendmail. It is a third-party program that
accesses all the mail messages being processed by MTA Sendmail and therefore can be used in
the bidirectional scanning scenario.
In order to enable filtering, please provide the following line in the section [smfi] of the config-
uration file: /etc/nod32/nod32.cfg set:
smfi_sock_path = "/var/run/nod32smfi.sock"
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