smtp_wrapper-0.3 -- SMTP filtering support daemon Copyright (C) 2006 Masahiko Ito
These programs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
These programs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with these programs; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Mail suggestions and bug reports for these programs to "Masahiko Ito" <m-ito@myh.no-ip.org>
History
2005/11/25 Develop started
2006/01/23 Ver. 0.1 release (1st)
2006/05/15 Ver. 0.2 release
2006/05/24 Ver. 0.3 release
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Install
- cd /usr/local/
- tar xvzf smtp_wrapper-0.3.tar.gz
- ln -sf smtp_wrapper-0.3 smtp_wrapper
- cd smtp_wrapper
- cc -o smtp_wrapper smtp_wrapper.c
- vi smtp_filter1.sh # ¥Õ¥£¥ë¥¿¤Ï³Æ¼«¤ÇÍÑ°Õ¤·¤Æ²¼¤µ¤¤(for ip_filter)
- vi smtp_filter2.sh # ¥Õ¥£¥ë¥¿¤Ï³Æ¼«¤ÇÍÑ°Õ¤·¤Æ²¼¤µ¤¤(*ɬ¿Ü*)(for contents_filter)
- chmod +x smtp_filter[12].sh
- smtp_wrapper -h
Usage : smtp_wrapper [-mh hostname] [-mp port] [-q backlog]
[-sh smtpserver_hostname] [-sp smtpserver_port] [-t timeout_sec] [-d delay_sec] [-if ip_filter] [-f contents_filter] [-cm child_max] [-i minimum_interval_sec] [-F] -mh hostname : my hostname [ANY] -mp port : my port [25] -q backlog : socket queue number [5] -sh smtpserver_hostname : real smtp hostname [localhost] -sp smtpserver_port : real smtp port [8025] -t timeout_sec : timeout second [no timeout] -d delay_sec : delay second for initial connection [0] -if ip_filter : filter program for IP check [/usr/local/smtp_wrapper/smtp_ip_filter] -f contents_filter : filter program for contents check [/usr/local/smtp_wrapper/smtp_contents_filter] -cm child_max : max number of connection to real smtp daemon [10] -i minimum_interval_sec : minimum interval second of connection from same ip address [0] -F : run in foreground
sendmail¤ÎÀßÄê
- vi sendmail.mc °Ê²¼¤ÎÄêµÁ¤òÄɲà DAEMON_OPTIONS(`Port=8025, Name=MTA')dnl
- vi submit.mc °Ê²¼¤ÎÄêµÁ¤òÄɲà DAEMON_OPTIONS(`Port=8025, Name=NoMTA, Addr=127.0.0.1, M=E')dnl
- sendmail.cf, submit.cf¤ò¹¹¿·
sendmail.cf¤Ë°Ê²¼¤Î¹Ô¤¬Äɲ䵤ì¤Æ¤¤¤ë»ö¤ò³Îǧ
O DaemonPortOptions=Port=8025, Name=MTA
submit.cf¤Ë°Ê²¼¤Î¹Ô¤¬Äɲ䵤ì¤Æ¤¤¤ë»ö¤ò³Îǧ
O DaemonPortOptions=Port=8025, Name=NoMTA, Addr=127.0.0.1, M=E
µ&hibar;Æ°
- vi /etc/rc.d/rc.local
if [ -x /usr/local/smtp_wrapper/smtp_wrapper ] then
/usr/local/smtp_wrapper/smtp_wrapper \
-t 60 \ -d 10 \ -if /usr/local/smtp_wrapper/smtp_filter1.sh \ -f /usr/local/smtp_wrapper/smtp_filter2.sh \ -cm 10 \ -i 5 echo ' smtp_wrapper' fi
- reboot
Figure
+-----------------------------------------------------------+
| |
| |
+-----+ command +------------------+ command +----------------+ |
| |--------->|(1) [2]|----------->| | |
| MTA |SOCKET(25)| smtp_wrapper |SOCKET(8025)| MTA | |
|(MUA)|<---------|[1] (2)|<-----------| (sendmail etc) | |
| | response | | response +----------------+ |
+-----+ | | (3) [3] | |
| +------+----+------+ |
| A P | |
| | I | |
| | P | |
| | E | |
| (stdout) | V (stdin) |
| +--------+ |
| | IP |--------+ |
| | FILTER |CONTENTS| |
| | | FILTER | |
| +--------+ | |
| +---------+ |
| |
+-----------------------------------------------------------+
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