diff options
author | jmb <jmb@FreeBSD.org> | 1997-10-19 16:40:10 +0000 |
---|---|---|
committer | jmb <jmb@FreeBSD.org> | 1997-10-19 16:40:10 +0000 |
commit | 76e2a878114e7b6390c0effc00d8798995e477d5 (patch) | |
tree | 5a528c5df244863252a1ca728d5ae085f6338c12 /etc/mail/README | |
parent | 3f21e439b0000c3c0982adfa0b180455db95d8cf (diff) | |
download | FreeBSD-src-76e2a878114e7b6390c0effc00d8798995e477d5.zip FreeBSD-src-76e2a878114e7b6390c0effc00d8798995e477d5.tar.gz |
anti-spam filter used by the FreeBSD mailing lists.
Diffstat (limited to 'etc/mail/README')
-rw-r--r-- | etc/mail/README | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/etc/mail/README b/etc/mail/README new file mode 100644 index 0000000..f65b7ee --- /dev/null +++ b/etc/mail/README @@ -0,0 +1,65 @@ + Filtering out SPAM from your site + +Introduction: + The FreeBSD Project filters spam, unsolicited commerical +e-mail, from its mailing lists. The filter has two parts: databases +and rulesets. We have added three rulesets to /etc/sendmail.cf, +check_relay and check_mail and xlat. (xlat is for testing only, as +explained in /etc/mail/sendmail.cf.additions.) These rulesets use +two databases. The denyip, a list of IP addresses, and spamsites, +a list of domains. We do not accept mail from any machine that +matches a entry in either database. + +Filtering at your site: + To filter spam at your site you need to: + 1. modify your /etc/sendmail.cf, + 2. retrieve the database source files from the master site, + 3. make the databases and + 4. finally signal sendmail that the configuration file has changed. + +1. Modifying your /etc/sendmail.cf + Add the database declarations and the rulesets contained +in /etc/mail/sendmail.cf.additions to your .mc file. If you do +not use m4 to generate your /etc/sendmail.cf, add the database +declarations to your /etc/sendmail.cf. + +2. Fetching the database source files: + The database source files are available from Gulf Coast +Internet via anonymous FTP. The Makefile in /etc/mail will retreive +the source files for you: as root, type "cd /etc/mail; make" at +the command line. The previous version of the database source +files is moved to <filename>.0. Local additions should be kept in +separate files. We use spamsites.local and denyip.local. You may +want to diff the new versions of the files against the previous +versions to see what has changed. + +3. Make the databases: + As root, type "cd /etc/mail; make install" will build the +two databases from the retrieved source files and the local additions +files. + +4. Signaling sendmail: + Sendmail will reread its configuration whenever sendmail +receives a HUP signal. As root, type "kill -HUP `cat +/var/run/sendmail.pid`". Check sendmail's log file to be sure that +it has restarted. /var/log/maillog should contain the line: "Oct +15 08:59:16 hub sendmail[6565]: restarting /usr/sbin/sendmail on +signal". Most likely, the date, time, hostname and process id will +be differ. + +Testing the spam filter: + +How can I tell if its working: + The mail log file, /var/log/maillog, will contain a line +for every message filtered. The lines will be similar to one of +these two log entries: + +Check_mail rejects: +"Oct 15 02:43:26 hub sendmail[6565]: CAA06565: ruleset=check_mail, +arg1=<announce@martianconsulate.com>, relay=xxx.isp.net [###.###.###.###], +reject=521 <announce@martianconsulate.com>" + +Check_relay rejects: +Oct 19 04:45:24 hub sendmail[3503]: NOQUEUE: ruleset=check_relay, +arg1=imsp015.netvigator.com, arg2=205.252.144.206, relay=root@localhost, +reject=521 blocked.contact postmaster@FreeBSD.ORG |