Enable Sendmail External Filtering - Symantec BRIGHTMAIL - SYM ANTISPAM AND Installation Manual

over a secure connection. Consequently, TCP port 443 must be configured to allow
outbound connections.
Symantec Brightmail AntiSpam's ability to identify spam accurately depends on
NOTE:
having access to messages in their original form. Software and hardware which
modify message headers and/or the content or structure of message bodies may
undermine Symantec Brightmail AntiSpam's effectiveness.

Enable Sendmail External Filtering

Your Sendmail installation must have support enabled for the Mail Filter API (Milter).
Milter is necessary to support external mail filters, such as the Brightmail Filter.
To verify if you have Milter support enabled, type the following command:
/usr/lib/sendmail -bt -d0 < /dev/null
The system displays text similar to the following:
Version 8.12.11
Compiled with: DNSMAP LOG MAP_REGEX MATCHGECOS MILTER MIME7TO8 MIME8TO7
If you see a reference to
support and you can skip this section.
Otherwise, follow the steps below to add the necessary lines to the build configuration file
in the Sendmail directory and build a new version of Sendmail. If you have problems
building and configuring Sendmail, refer to the following configuration document:
http://www.milter.org/milter_api/installation.html
Sendmail source, you can find it on the Sendmail Web site:
For more information on setting up Sendmail see
NOTE:
Brightmail Filter," on page
To compile Sendmail 8.12 to use external mail filters:
Log in as
1
Change to your base
2
at
devtools/Site/site.config.m4
You can create this file if it doesn't exist.
Add the following line:
3
APPENDDEF(`conf_sendmail_ENVDEF', `-DMILTER')
Save your changes to the build configuration file.
4
Installing Brightmail Scanner for Sendmail
NAMED_BIND NDBM NETINET NETINET6 NETUNIX NIS NISPLUS
PIPELINING SCANF XDEBUG
, then your Sendmail installation has the required Milter
MILTER
33.
.
root
directory and open the build configuration file (located
sendmail
Installation Guide
. If you do not have the
http://www.sendmail.org
"Configuring Sendmail for the
).
.
17