QMAIL
Qmail is an MTA similar to Exim
INSTALLATION
Installation involves the following steps:
1.Installing Qmail itself
2.Installing EZmlm and EZmlm-idx
3.Installing Autoresponder
4.Installing Vpopmail
5.Installing maildrop
6.Uninstalling Sendmail
7.Starting up qmail
You may download these from http://www.qmailrocks.org/downloads/
mkdir /usr/local/src/qmail
Download all the zip folders to the folder qmail
cd /usr/src/qmail/qmail-1.03
make man && make setup check
./config-fast your_fqdn_hostname
(eg: ./config-fast mail.mydomain.com)
Ezmlm
EZmlm is a nice mailing list add-on to Qmail
cd /usr/src/qmail/
tar zxvf ezmlm-0.53-idx-0.41.tar.gz
tar zxvf ezmlm-0.53-idx-0.41.tar.gz
make && make setup
Autoresponder
cd /usr/src/qmail/
tar zxvf autorespond-2.0.5.tar.gz
cd autorespond-2.0.5
make && make install
Vpopmail
Vpopmail is a set of programs for creating and managing multiple virtual domains on a qmail server, with full support for many POP/IMAP servers. A web interface to vpopmail is called Vqadmin
Create a vpopmail user and a vchkpw group
Set up the vpopmail mysql connection config file under the vpopmail users home directory.
echo localhost|0|vpopmailuser|password|vpopmail > ~vpopmail/etc/vpopmail.mysql
chown vpopmail:vchkpw ~vpopmail/etc/vpopmail.mysql
chmod 640 ~vpopmail/etc/vpopmail.mysql
Creating the Database User
Log into your MySQL server as root and type the following commands to create the database for vpopmail.
mysql> CREATE DATBASE vpopmail;
mysql> GRANT ALL ON vpopmail.* TO vpopmail@localhost IDENTIFIED BY yourpassword;
mysql> flush privileges;
cd /usr/src/qmail/
tar zxvf vpopmail-5.4.13.tar.gz
cd vpopmail-5.4.13
./configure enable-logging=p enable-auth-module=mysql disable-passwd enable-clear-passwd disable-many-domains enable-auth-logging enable-sql-logging enable-valias disable-mysql-limits
make && make install-strip
Maildrop
Maildrop is a mail filtering agent which can be used to filter messages as they arrive on the server.
cd /usr/src/qmail/
tar zxvf maildrop-1.6.3.tar.gz
cd maildrop-1.6.3
./configure prefix=/usr/local exec-prefix=/usr/local enable-maildrop-uid=root enable-maildrop-gid=vchkpw enable-maildirquota
make && make install-strip && make install-man
Removing Sendmail
rpm -qa | grep sendmail
If Sendmail is installed as an RPM, you will see an output similar to this:
sendmail-x.x.x.x
sendmail-doc-x.x.x.x
sendmail-devel-x.x.x.x
sendmail-cf-x.x.x.x
If its installed as an RPM, you can uninstall Sendmail quite easily by running the following commands:
/etc/rc.d/init.d/sendmail stop (to stop Sendmail)
rpm -e nodeps sendmail-x.x.x.x
rpm -e nodeps sendmail-doc-x.x.x.x
rpm -e nodeps sendmail-devel-x.x.x.x
rpm -e nodeps sendmail-cf-x.x.x.x
If the RPM query produces no output, you most likely have a source install of Sendmail.
/etc/rc.d/init.d/sendmail stop (to stop Sendmail)
mv /usr/lib/sendmail /usr/lib/sendmail.old
mv /usr/sbin/sendmail /usr/sbin/sendmail.old
chmod 0 /usr/lib/sendmail.old /usr/sbin/sendmail.old
Establishing an artificial Sendmail path
ln -s /var/qmail/bin/sendmail /usr/lib/sendmail
ln -s /var/qmail/bin/sendmail /usr/sbin/sendmail
Starting qmail
qmailctl stop
qmailctl start
You can find out how things are running by: qmailctl stat
You should see an output like this:
/service/qmail-send: up (pid 29956) 2 seconds
/service/qmail-send/log: up (pid 29960) 2 seconds
/service/qmail-smtpd: up (pid 29963) 2 seconds
/service/qmail-smtpd/log: up (pid 29968) 2 seconds
/service/qmail-pop3d: up (pid 29971) 2 seconds
/service/qmail-pop3d/log: up (pid 29972) 2 seconds
messages in queue: 0
messages in queue but not yet preprocessed: 0
Location of qmail logs
/var/log/qmail/qmail-smtpd/
/var/log/qmail/qmail-send/
/var/log/qmail/qmail-pop3d/
How can I decipher qmail logs?
1. Search the logs for info msg N: bytes M from SENDER entries.
2. Note the message ID, N.
3. Search forward for starting delivery K: msg N to remote/local RECIPIENT entries.
4. For each one you find before the first end msg N entry, youve discovered a recipient.
Article Authored by Junitha Mayana
Author, Junitha Mayana, is a Systems Engineer with SupportPRO. Junitha specializes in Level 2 and Level 3 Linux / Windows Administration. SupportPRO offers 24X7 technical support services to Web hosting companies and service providers.