COURIER INSTALLATION

COURIER_MTA INSTALLATION



1.Download the courier authentication library

URL://http://www.courier-mta.org/authlib/

# rpm -qa | grep libtool
# rpm -qa | grep binutil
# rpm -qa | grep expect

# su – vasanth
# tar xvjf courier-authlib-0.63.0.tar.bz2
# cd courier-authlib-0.63.0
# ./configure
# make
# make install
# cd /usr/local/etc/authlib
# /usr/local/sbin/authdaemond start
# ps -ax | grep auth
# cd /etc/init.d
# ln -s /usr/local/sbin/authdaemond
# ln -s /etc/init.d/authdaemond /etc/rc5.d/S20authdaemond



INSATALLING Courier-IMAP

At first check the mailbox format by checking

# cat /var/qmail/control/defaultdelivery
Note: Compile courier as non root user
# tar xvjf courier-imap-4.7.0.tar.bz2
# cd courier-imap-4.7.0
# su root
#make install (must be root)
# make install-configure(must be root )
# cd /usr/lib/courier-imap/ ( Every thing related to courier will be installed inside this directory)

1.bin >>> Contain the binary file related to the courier
2. etc >>> Contain the configuaration files
3. libexec >>> Contain the startup scripts
4. libexec >>> courier tcpd is the tcp super server like xinetd and inetd
5. man >>> Mnaul pages





CONFIGURING POP3 SERVICE

# cd /usr/lib/courier-imap/etc
# vi pop3d
#/usr/lib/courier-imap/libexec/pop3d.rc start
# netstat -nlp | grep 110


# vi /usr/local/etc/authlib/authdaemonrc
uncomment the following
authmodulelist="authuserdb authpam authldap authmysql authcustom authpipe"

IF any problem regarding pop read

http://www.courier-mta.org/authlib/README.authdebug.html


COURIER -POP3-SSL

# vi /usr/lib/courier-imap/etc/pop3d.cnf

Add the entrries to your choice

# cd /usr/lib/courier-imap/share

# ./mkpop3dcert

Certificate is stored in the /usr/lib/courier-imap/share/pop3d.pem

# cd /usr/lib/courier-imap/libexec

# ./pop3d-ssl.rc start



NOTE

Link all the startup script to /etc/init.d/
and /etc/rc3.d or rc5.d

QMAIL-SMARTHOST

QMAIL AS SAMRTHOST

Smart host means the email gateway between our localnetwork and remote network.


There are two files in /var/qmail/control.

1./var/qmail/control/locals
2./var/qmail/control/smtproutes
locals -> Define the local domains which are allowded to route messages. It normally define localdomain and fqdn of our server. If the message is destined remote domain it will consult the smtproutes and forward all messages to that server.





Mail open relay

mv /var/qmail/control/rcpthosts /var/qmail/control/rcpthosts.bak

SquirrelMail Installation from Source

SquirrelMail


# wget http://sourceforge.net/projects/squirrelmail/files/stable/1.4.20/squirrelmail-1.4.20.tar.bz2/download



# tar xvjf /squirrelmail-1.4.20.tar.bz2/

# mv /squirrelmail-1.4.20 /varwww/html

#chown -R apache:apache /var/www/html/ squirrelmail-1.4.20

# cd /var/www/html/ squirrelmail-1.4.20

# cd /var/www/html

# mv squirrelmail-1.4.20 webmail


# cd webmail

# mkdir -p /var/local/squirrelmail


# mv -i data/ /var/local/squirrelmail/

# chown -R apache.apache /var/local/squirrelmail/attach/ /var/local/squirrelmail/data/

# chown -R apache /var/local/squirrelmail/attach/ /var/local/squirrelmail/data/

# chgrp -R apache /var/local/squirrelmail/attach/ /var/local/squirrelmail/data/







Data directory inside the above location is to moved to some whare else, Because squirrel mail maintains uplodaed data in this directory.


# cd /var/www/html/ webmail/config

# ./conf.pl

Select the option 2
and enter like given below


1. Domain : ip address of the server

2. Invert Time : false

3. Sendmail or SMTP : Sendmail



A. Update IMAP Settings : localhost:143 (courier )

B. Change Sendmail Config : /usr/sbin/sendmail


Save and return to previous menu

From the main menu select the option 4 general options and change the following settings.


1. Data Directory : /var/www/html/squirrelmail-1.4.20/data/ // This is optional

2.Attachment Directory : $data_dir/ // This is optional

Save and return to previous menu


Add The virtualhost in apache.




# ServerAdmin webmaster@dummy-host.example.com

DocumentRoot /var/www/html/webmail

ServerName www.test.com

# ErrorLog logs/dummy-host.example.com-error_log

# CustomLog logs/dummy-host.example.com-access_log common





# service httpd restart
#/etc/init.d/imapd.rc restart

In the browser enter localhost/webmail

SENDMAIL LOGGING

SENDMAIL [ SYSLOG]


How does syslog determine where to send the log files for sendmail ?


catting the out put of mail in syslog in sles is shown below.


# grep -i mail /etc/syslog.conf

mail.* - /var/log/mail

mail.info - /var/log/mail.info

mail.warning - /var/log/mail.warn

mail.err - /var/log/mail.err

*.*,mail.none,news.none - /var/log/messages


Explanation:-

In general syslog entry in linux and unix servers are in the following form.

Facility.level -


Facility is mail in syslog.conf

level may be one of the 0 to 8 ie (debug-emergency)

mail.* in syslog.conf indicate that all the levels.


NOTE: debug produces more messages and enmergency produces less messages.
Debug level creates lots of disk IO.

System log setup with sendmail is each line conatain atleast two lines.

First line acknowledges the receive of the message and second lne correcsponds to the delivery attempts.



Example are gievn below.


Recieving of message from the mail user agent

Jun 2 11:42:13 pc1 sendmail[6484]: o526C9vA006484: from=root, size=6, class=0, nrcpts=1, msgid=<201006020612.o526C9vA006484@pc1.test.com>, relay=root@localhost


Jun 2 11:42:22 pc1 sm-mta[6500]: o526CD0Q006500: from=, size=262, class=0, nrcpts=1, msgid=<201006020612.o526C9vA006484@pc1.test.com>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]

Delivery of the message


Jun 2 11:42:22 pc1 sm-mta[6500]: o526CD0Q006500: to=, ctladdr= (0/0), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30262, dsn=2.0.0, stat=Sent


Jun 2 11:42:22 pc1 sendmail[6484]: o526C9vA006484: to=root, ctladdr=root (0/0), delay=00:00:13, xdelay=00:00:09, mailer=relay, pri=30006, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (o526CD0Q006500 Message accepted for delivery).

RESTRICTING MESSAGE SIZE IN SENDMAIL

RESTRICTING MESSAGE SIZE


Go to /data/sendmail-8.14.0/cf/cf

# vi sendmial.mc

insert the following line

define(`confMAX_MESSAGE_SIZE', `4096') // mAXIMUM MESSAGE SIZE IN coming toTHE SERVER IS RESTRICTED TO 4k

# cp sendmail.cf /etc/mail

# grep ^o /etc/smail/sendmail.cf

The output should conatin the following line.

MaxMessageSize=4096

CLAMAV INSTALLATION ON OpenSuse 11

CLAMAV INSTALLATION


# cd /data

# cd clamav

# tar xvzf clamav-0.96.1.tar.gz

# cd clamav

# groupadd clamav

# useradd -g clamav clamav

# ./configure

#make

# make install

# cd /usr/local/etc/

# vi clamd.conf

comment out the line Example.

#Example

uncomment the line

LocalSocket /tmp/clamd.socket

:wq //save the file


# vi freshclam.conf

Comment out the line Example

# Example


:wq //Save the file.



# touch /var/log/freshclam.log

# chmod 600 /var/log/freshclam.log


#chown clamav /var/log/freshclam.log



# which freshclam // This is the utility responsible for updating clam.


The output should be:

/usr/local/bin/freshclam


Run the following

# ldconfig

# freshclam // This command is for updating clamd

# clamscan

# clamd start

# ps -ax | grep clam


The output should be:



# ps -ax | grep clam

Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html

3981 ? Ssl 0:00 clamd start

4010 pts/0 R+ 0:00 grep clam





# freshclam // This option is mainly used for the updating clamav.


# which freshclam


The log file for the fresh clam process is


# ls -l /var/log/freshclam.log

Run the freshclam process in dialy basis in cron.

Sendmail cotrolling script

I am posting one useful script to start, stop, restrat sendmail( Source code installation )

#! /bin/sh

case "$1" in
start)
echo "Starting SMTP port. (sendmail)"
/usr/sbin/sendmail -bd -q1h
;;
stop)
echo "Stopping down SMTP port:"
killall /usr/sbin/sendmail
;;
restart|reload)
$0 stop && $0 start
;;
*)
echo "Usage: $0 {start|stop|restart|reload}"
exit 1
esac
exit 0