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relay-ctrl
SMTP Relaying Control for qmail & tcpserver
Bruce Guenter <bruceg@em.ca>
Version 2.5
2000-10-06
This pair of programs controls access to relaying for users that
authenticate using either POP3 using the qmail-popup/qmail-pop3d
servers, or IMAP using Courier IMAP.
Requirements:
- You must be using qmail-popup/qmail-pop3d with either tcpserver or
tcp-env to serve POP3 OR
- You must be using Courier IMAP to serve IMAP.
- You must be using tcpserver with qmail-smtpd to serve SMTP.
How to install:
- Check the definitions in defines.h. The default settings are
appropriate for installing relay-ctrl under /usr instead of
/usr/local.
- Check the Makefile for appropriate values for your compiler and
linker, and installation paths.
- Run "make"
- As root, run "make root-install"
How to use:
- Make sure the configuration defaults are appropriate for your system.
See the man page for relay-ctrl-age.
- If you want to have a fixup address (see the qmail FAQ) inserted into
the RELAYCLIENT setting, put it into the first line of
"relayclient" in the config directory as folows:
:allow,RELAYCLIENT='@fixup'
- Add the following line to a file in /etc/cron.d. This assumes a
recent version of vixie cron. Other versions of cron may use
different syntax, and you may need to edit root's crontab.
* * * * * /usr/sbin/relay-ctrl-age
How to use with qmail-pop3d:
- Insert the program "relay-ctrl-allow" between your checkpassword
program and qmail-pop3d in your invocation of tcpserver for the POP
service.
How to use with Courier IMAP:
- Make a symlink in /usr/lib/courier-imap/libexec/authlib to
/usr/sbin/relay-ctrl-allow.
- Insert the command relay-ctrl-allow at the end of the list of
authentication modules (AUTHMODULES) in etc/imapd.config.
Operation:
- relay-ctrl-age records IPs in /var/spool/relay-ctrl, checks all
previously recorded addresses, and removes any that have not been
updated for at least 15 minutes. It then lists all of the addresses
through a pipe to tcprules to build the control database for the smtp
server.
- relay-ctrl-allow checks the environment for the remote IP from which
the connection is originating. It runs relay-ctrl-age to ensure that
it is recorded in the control tables.
This program is Copyright(C) 1999-2000 Bruce Guenter, and may be copied
according to the GNU GENERAL PUBLIC LICENSE (GPL) Version 2 or a later
version. A copy of this license is included with this package. This
package comes with no warranty of any kind.
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