Jitamitra

Reliance Netconnect and Ubuntu / Debian

2011-05-01T12:14:00.004+05:30

Hello Readers,

Oh!! Yeah, Finally reliance netconnect connected & started working on ubuntu 10.04 with easy simple steps followed to configure it.

Search the package usb-modeswitch & usb-modeswitch-data

root@cyclotron:~# apt-cache search usb-modeswitch usb-modeswitch-data

Install the package usb-modeswitch & usb-modeswitch-data

root@cyclotron:~# apt-get install usb-modeswitch usb-modeswitch-data

Now follow the easy installation steps to get connected.

Systems --> Preferences --> Network Connection

Select Mobile Broadband --> Add --> Select your provider country --> Select your provider --> Confirm Settings

Now Enter the Phone Number in the Username box & Phone Number in the Password and Apply the settings.

Now you should get connected to the Reliance Netconnect.

Enjoy Netconnect. :-)

How To : Install firefox 4 (stable) on Ubuntu

2011-03-29T12:51:00.002+05:30

Hello Folks,

If you want to install & enjoy firefox 4 on your Ubuntu Machine / Debian Machine follow the simple steps.

apt-get remove firefox
dpkg --purge firefox

Now add the below Firefox Stable PPA :-
sudo add-apt-repository ppa:mozillateam/firefox-stable

apt-get update
apt-get install firefox

The installation may take sometime, After the installation you check the new Firefox 4 installed and also you download Firefox 4.

Enjoy the browsing with new Firefox 4 with great features in it. :-)

Pure-ftpd-mysql : Unable to start a standalone server

2011-03-22T19:36:00.002+05:30

Hello All,

After restarting ftp server found that the ftp server is not running, Checked the system log of the server & found the following error.

pure-ftpd: (?@?) [ERROR] Unable to start a standalone server: [Invalid argument]

In debian etch 4, The pure-ftpd-mysql does not have link to pure-ftpd from pure-ftpd-mysql by default. Apply the link by force and restart the service.

ln -sf /usr/sbin/pure-ftpd-mysql /usr/sbin/pure-ftpd

Enjoy. :-)

HOW TO : Convert .flv to .mp3 in Ubuntu / Debian

2011-03-03T19:39:00.001+05:30

Hello,

Converting .flv or mp3 has become so easy in Linux box within few minutes. Just thought of sharing it.

Installation of FFmpeg on Debian OR Ubuntu

root:~#apt-get install ffmpeg

Converting .flv to .mp3

ffmpeg -i filename.flv -acodec copy output.mp3

Enjoy. :-)

Update-grub : Dual Boot - Grub Load

2011-02-25T19:35:00.001+05:30

Hi,

From last 2days I was trying to upgrade my laptop from Debian Lenny 5.0 to Debian Squeeze 6.0, As there was some problem with my internet connection I was not able to do it.

After 24hrs I was able to connect to internet. Now my machine is upgraded with Debian Squeeze 6.0 finally and thought of sharing a small issue faced with boot loader after the upgradation.

When upgradation was proceeding it asked to select the partition to install the boot-loader. It showed the two partition /dev/sda (Ubuntu partition) & /dev/sda2 (Debian Partition) as I was not sure, installed the boot-loader on /dev/sda. After the complication the laptop rebooted and I was not able to find the Ubuntu 10.04 in my grub. I found only the debian kernel boot loader. After some try I figured it out, if it needs to updated run the command update-grub. Run this command on live machine. Also check where the master boot record is pointed and run the update command.

By this the grub will read the partition table re-generate the grub.cfg as below.

cyclotron:~# update-grub
Generating grub.cfg ...
Found background image: /usr/share/images/desktop-base/desktop-grub.png
Found linux image: /boot/vmlinuz-2.6.32-5-686
Found initrd image: /boot/initrd.img-2.6.32-5-686
Found linux image: /boot/vmlinuz-2.6.26-2-686
Found initrd image: /boot/initrd.img-2.6.26-2-686
Found linux image: /boot/vmlinuz-2.6.26-1-686
Found initrd image: /boot/initrd.img-2.6.26-1-686
Found Ubuntu 10.04.2 LTS (10.04) on /dev/sda5
done

Debian Etch Sources List Archive

2010-12-16T15:10:00.003+05:30

Hello

As we all know, Debian Etch has been no longer supported since feb 2010. But still some machines might be running Debian Etch(Upgradation not feasible). If your searching for any source to install packages to your machine. Ass this below sources in to your sources.list file.

# vim /etc/apt/sources.list

deb http://archive.debian.org/debian/ etch main contrib non-free

# apt-get update

# apt-get install

Enjoy...

How to Restrict postfix recipient in zimbra

2010-12-16T13:45:00.006+05:30

Restrict postfix recipient in zimbra

This will show how you can modify postfix to restrict who can send to certain address in your domain such as distribution like team@domain.com.

These change will most likely not persist between upgrades!!!

zimbra/conf/postfix_recipient_restrictions.cf. Also permissions on files created in /opt/zimbra/postfix/conf/ will be changed.

Create permitted sender list as zimbra user under /opt/zimbra/postfix/conf/

permitted_sender List :- This file contains domains list OR User mail list, Only protected senders can send mail to this domains OR users.

# vim /opt/zimbra/postfix/conf/permitted_senders

localhost                         OK

myhost.com                    OK

mydomain.com                OK

username@domain.com   OK

Create protected recipient file as zimbra user under /opt/zimbra/postfix/conf/

protected_recipients :- This file contains email address that can only receive from permitted senders

# vim /opt/zimbra/postfix/conf/protected_senders

myteam@domain.com                 permitted_senders_list

protect_users@domain.com         permitted_senders_list

Include the important setting to /opt/zimbra/postfix/conf/main.cf

permitted_senders_list=check_senders_access hash:/opt/zimbra/postfix/conf/permitted_senders, reject

smtpd_restriction_classes = permitted_senders_list,local_only

FYI :- The changes in main.cf will not survive after the upgrade of zimbra.

Now add the this restriction on the top of all line.

# vim /opt/zimbra/conf/postfix_recipient_restrictions.cf

check_recipient_access hash:/opt/zimbra/postfix/conf/protected_recipients

Reload the settings

/opt/zimbra/postfix/sbin/postmap /opt/zimbra/postfix/conf/permitted_senders

/opt/zimbra/postfix/sbin/postmap /opt/zimbra/postfix/conf/protected_recipients

/opt/zimbra/postfix/sbin/postmap /opt/zimbra/postfix/conf/postfix_recipient_restrictions.cf

/opt/zimbra/postfix/sbin/postfix  reload

FYI :- This configuration can also used in normal postfix..

Install Nuxeo-DM on Debian Gnu/Linux 5.0 Lenny

2010-12-09T16:03:00.001+05:30

Nuxeo DM is an open source document management application and helps to manage and track flow of content.

Intallation instructions for Debian Lenny

Install sun-jdk6 from deb apt source.

# apt-cache search sun-java6-jdk (This may take some time...)

After the installation of sun-java6-jdk, Add this sources to /etc/apt/sources.list

"deb http://apt.nuxeo.org/ lucid releases"

Run the following command in the terminal :-

# apt-get update
# apt-get search nuxeo
# apt-get install nuxeo-dm-tomcat (This may take some time...)

After the installation, use an editor to update the configuration:

# /etc/nuxeo-dm/nuxeo.conf

Uncomment this line

# JAVA_HOME=/usr/lib/jvm/java-6-sun

And invoke the service

# invoke-rc.d nuxeo-dm \[start\|stop\|status\|restart\]

When the Nuxeo-Dm started, Open this link in the browser

# http://localhost:8080/

Login the Nuxeo using Administrator username and Administrator as password.

Mplayer play only audio hold video

2010-12-04T12:10:00.003+05:30

Hi All,

Few days back I watched a funny movie and the dialouges were superb and thought of listening again and again as its funny movie.

As I use linux, I just wanted to play the movies audio but not the video in mplayer, after searching from man pages found this.

If you wish to listen only film dialouges run the command :-

mplayer filename.mpg -vo null

mplayer -vo null filname.mpg

Try & Enjoy the audio movie :-)

Migrate / Backup your mails to gmail / google apps.

2010-10-25T17:30:00.002+05:30

Hi All...

Here are some worked examples on how to do the synchronization to google hosted email system.

Step 1.
Create directory to where you can store password files.

Step 2.
Make a list of password files. (A password file is one with only the password stored in it)

Step 3.
Check the version of imap-sync using in your computer. The synchronization works only with versions above 1.261. If you are using debian / ubuntu use the below command to check the version.

apt-cache policy imapsync
imapsync:
Installed: 1.286+dfsg-3ubuntu1
Candidate: 1.286+dfsg-3ubuntu1

Step 4.
After the installation of imapsync go to the password created directory.

Step 5.
To synchronize the mail from any domain to gmail OR google hosted apps use the following command. (Make sure imap has been enabled in the Gmail account)

$ imapsync --host1 mail.domain.com --user1 source@domain.com --noauthmd5 --passfile1 /path/to/passwordfile --host2 imap.gmail.com --user2 destination@domain.com --passfile2 /path/to/passwordfile --port2 993 --ssl2 --folder 'INBOX' 'INBOX.Sent'

Step 6.
If the given credentials are correct, the command will look like the following.

with perl 5.10.1
Mail::IMAPClient 3.21
IO::Socket 1.31
IO::Socket::SSL
Digest::MD5 2.39
Digest::HMAC_MD5
Term::ReadKey 2.30
Date::Manip
with perl 5.10.1Mail::IMAPClient 3.21IO::Socket 1.31IO::Socket::SSL Digest::MD5 2.39Digest::HMAC_MD5 Term::ReadKey 2.30Date::Manip

/usr/bin/imapsync --host1 mail.domain.com --user1 source@domain.com --noauthmd5 --passfile1 passwordfile --host2 imap.gmail.com --user2 source@domain.com --passfile2 passwordfile --port2 993 --ssl2 --folder INBOX INBOX.Sent
Turned ON syncinternaldates, will set the internal dates (arrival dates) on host2 same as host1.
TimeZone:[asia/kolkata]
Will try to use LOGIN authentication on host1
Will try to use LOGIN authentication on host2
From imap server [mail.domain.com] port [143] user [source@domain.com]
To imap server [imap.gmail.com] port [993] user [source@domain.com]
Banner: * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE
THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE STARTTLS] Courier-IMAP ready. Copyright 1998-2008 Double Precision, Inc. See COPYING for distribution information.

Host mail.domain.com says it has NO CAPABILITY for AUTHENTICATE LOGIN
Success login on [mail.domain.com] with user [source@domain.com] auth [LOGIN]
Success login on [mail.domain.com] with user [source@domain.com] auth [LOGIN]
Banner: * OK Gimap ready for requests from 12 x26if996498wfd.20
Host imap.gmail.com says it has NO CAPABILITY for AUTHENTICATE LOGIN
Success login on [imap.gmail.com] with user [source@domain.com] auth [LOGIN]
host1: state Authenticated
host2: state Authenticated
From separator and prefix: [.][INBOX.]
To separator and prefix: [/][]
++++ Calculating sizes ++++
From Folder [INBOX] Size: 11375813 Messages: 34
Total size: 11375813
Total messages: 34
Time: 15 s
++++ Calculating sizes ++++
To Folder [INBOX] Size: 5626 Messages: 2
Total size: 5626
Total messages: 2
Time: 2 s
++++ Listing folders ++++
From folders list: [INBOX]
To folders list: [Follow up] [INBOX] [Misc] [Priority] [[Gmail]] [[Gmail]/All Mail] [[Gmail]/Drafts] [[Gmail]/Sent Mail] [[Gmail]/Spam] [[Gmail]/Starred] [[Gmail]/Trash]
++++ Looping on each folder ++++
From Folder [INBOX]
To Folder [INBOX]
++++ From [INBOX] Parse 1 ++++
++++ To [INBOX] Parse 1 ++++
++++ Verifying [INBOX] -> [INBOX] ++++
Time: 4 s
++++ End looping on each folder ++++
++++ Statistics ++++
Time : 20 sec
Messages transferred : 0
Messages skipped : 0
Total bytes transferred: 0
Total bytes skipped : 0
Total bytes error : 0
Detected 0 errors

Step 7.
Check your mail box to see if the mails have been synchronized.

Happy Migrating...

Project Pier Update User Password

2010-10-25T17:25:00.005+05:30

Hello,

In the table called pp_users, you will find the line corresponding to the admin account. Note the salt value from the table pp_user Or you can copy / paste the salt value directly into the mysql update command.

To modify the password of the admin / user account, use the below mysql statement.

Here in the below mysql statement,

sha1 (Function)

(salt value)

adminpassword (user password)

update pp_users SET token = sha1(“”) where username = ‘admin’;

Howto: firefox flash upgrade in linux

2010-08-01T15:21:00.002+05:30

Upgrading of firefox flash plugin on linux.

1. Download flash plugin file from adobe website.

2. Select tar.gz for linux.

3. Unzip the downloaded file.

4. Copy the libnullplugin.so to /usr/lib/firefox/plugins/

5. Fire the browser firefox & check the youtube.

Watch it.. Enjoy!!!

Howto:Firefox upgrade in linux

2010-08-01T15:09:00.000+05:30

Question : How to upgrade my firefox in linux?

Note1 :- You can do easily do the upgrade your firefox browser, After doing you may loose your bookmarks, browsing history and firefox plugins,extensions.

Note2 :- Before upgrading your browser better make backup of your bookmarks.

Question : How to backup of bookmarks in firefox.

Click on bookmarks --> Organize Bookmarks (Ctrl+Shift+O) --> Click on Import and Backup --> Select Export Html

The backed-up html file will be stored in your browser specified directory.

Question :- How to install new firefox?

Run the following commands as 'ROOT'

1. Download new firefox.

2. Unzip the downloaded file using following commands.

tar -xjf filename.tar.bz2

3. Backup your old firefox directory to firefox-backup

4. Copy the unzipped firefox directory to /usr/lib/firefox

5. Check the version of browser by firing firefox browser

Help --> About Mozilla Firefox

Now you have upgraded your browser. Happy Browsing.. :-)

Disabling Console Beep Sound in xfce | gnome | openbox | fluxbox

2010-07-23T11:31:00.000+05:30

Hi All..

After migrating from gnome to xfce, I was not happy because of console beep sound, It took a dat to me to disable console beep. I was totally forgotten there is command like modprobe.

So run this command to disable console beep..

modprobe -r pcspkr

To add it back

modprobe -a pcspkr

Your beep sound will be disabled.

Happy xfce..

Postfix sender_bcc maps

2010-06-24T16:38:00.000+05:30

Hi,

Simple steps to configure sender_bcc in postfix OR zimbra postfix.

1. Create a file in /opt/zimbra/postfix/conf/virtual.tab

2. Postmap the file. Follow as below.

3. Add the email address user@domain.com 123@domain.com (here 123@domain.com is just a dummy address).

exampler :- user@domain.com 123@domain.com

4. In virtual.tab add the email address to which account the mail copies to be sent. 123@domain.com abc@domain@.com, xyz@gmail.com, hdg@hotmail.com

5. Add the below line to main.cf
virtual_alias_maps = proxy:ldap:/opt/zimbra/conf/ldap-vam.cf,hash:/opt/zimbra/postfix/conf/virtual.tab

Now the mail should be able to get a bcc copy of mail.

Enjoy...

Zimbra Installation on Debian, Ubuntu & Linux

2009-12-29T12:17:00.006+05:30

Hi All...

Zimbra installation on any linux is very easy. It keeps system administrator in peace. If you really want to feel it INSTALL IT ;-) Enjoy.

Download Zimbra OS from http://www.zimbra.com/community/downloads.html

Before configuring setup the dns for the domain you want to configure the email on local machine or any dns servers. Example : Everydns, Xname.org.. ( This may take few hours).

Installation of bind ( Dns ) Configuration on debian / ubuntu.

apt-get install bind ( Installs bind packages on debian box )

add your ip address to /etc/hosts.

The first line of the file defines the IP address of localhost as follows: 127.0.0.1 localhost.localdomain localhost

The second line will include the private IP address and hostname of the server: 1.2.3.4(Public Ip Address) mail.domain-name.com mail

ex :- 127.0.0.1 localhost.localdomain localhost
Your Public-Ip-Address mail.domain-name.com mail

Go To /etc/bind/ copy db.local file /var/cache/bind/'domain'.db = ( 'domain' = Your Domain Name. Any .com , .in, .org,) It would be better to configuring on local machine as dns server take few hours to resolve.

Change the domain name and ip address. ( Dont forget to add your ip add in /etc/hosts ).

Tip :- Properly mention the ( DOT (.) , Open Bracket & Close Bracket () in the /var/cache/bind/domain-name.db file. These are the main important things techies will go mad. ;-) unless they are very professional.

Add the domain zone in /etc/bind/named.conf.local

zone "example.com" {

type master;

file "/var/cache/bind/example.com.db"

};

; BIND data file for local loopback interface

;
$TTL    604800@       IN      SOA     domain-name.com. root.domain-name.com. (                              1         ; Serial                         604800         ; Refresh                         86400         ; Retry                         2419200        ; Expire                         604800 )     ; Negative Cache TTL;@       IN      NS      example.com.@       IN      A       127.0.0.1(Public IP Add)mx      IN      A       127.0.0.1(Public IP Add)mail    IN      A       127.0.0.1(Public IP Add)@       IN      MX      5       mx.example.com.

Try to dig(Resolve) your domain name locally it should point your ip address.Once verified you can go head with next step. If you find any problem check the previous step.

Use dig command to check. exaample :- dig domain-name.com, dig domain-name.com mx.

Untar the downloaded zimbra file.

tar -xjvf filename.tgz /opt/

Before installation of zimbra you may need to install some necessary dependency packages.

libidn11, fetchmail, libgmp3c2, libxml2, libstdc++6, openssl, libltdl3, curl

Start installation of ZCS.

Go to /opt/zimbra/ run install.sh file.

             Run ./install.sh

After it confirms the dependency packages has been installed and it asks select the ZCS packages to be selected by ckecking " Y ".

Example :- Zimbra Apache, Zimbra Anti-Spam, Zimbra Anti-Virus, Zimbra MTA, Zimbra logger, Zimbra Stats, By Default Zimbra Proxy will be marked as "No". You can make it installable if you need. Please refer configure documentation of zimbra proxy in Zimbra Administration Documentation.

It starts unpacking the packages & installs all necessary & selected packages.

It asks you to make some changes in the zimbra administration configuration such as https port, username, password, etc..

Once done, Configuration will be saved & asks to send zimbra notification. ( You can say "Yes" If you want OR You can "No" too ).
Your zimbra mailbox starts working now.

Check your zimbra wheather its working properly.

    su - zimbra

zmcontrol status

netstat -antp

Finally Reboot your mail machine & check it.
Happy Zimbra Mail Server......................... :-)

Domain Level Blocking Users in Zimbra

2009-12-26T09:50:00.001+05:30

Hi All..

The follwing are the simple steps to blocking users in zimbra postfix.

Below mentioned are the steps to "REJECT" an external email address from sending mail to the users of the Zimbra Domain.

1. Edit /opt/zimbra/conf/zmmta.cf

Add this line below (smtpd_recipient_restrictions)
POSTCONF smtpd_sender_restrictions FILE postfix_sender_restrictions

2. Create file /opt/zimbra/conf/postfix_sender_restrictions with the below line:

hash:/opt/zimbra/postfix/conf/reject

3. Create file /opt/zimbra/postfix/conf/reject with the list of email address to be rejected in the below format:

user@domain.com REJECT

4. postmap /opt/zimbra/postfix/conf/reject

5. zmmtactl stop ; zmmtactl start

Please note :- This change will not survive an upgrade and you will have to redo these after the upgrade.

Courtesy :- http://wiki.zimbra.com/index.php?title=Domain_level_blocking_of_users

Check BitRate,Frequency,Info of Mp3 Files on Debian & Ubuntu

2009-12-21T12:09:00.004+05:30

Hi All..

Know you songs BitRate, Play Time, Frequency, of your mp3 files.

eyeD3 filname.mp3

Example :-

everything_i_do.mp3 [ 6.00 MB ]
-------------------------------------------------------------------------------
Time: 06:33 MPEG1, Layer III [ 128 kb/s @ 44100 Hz - Joint stereo ]
-------------------------------------------------------------------------------
ID3 v1.0:
title: Everything I Do, I Do It For artist: Bryan Adams
album: year: None
track: genre: Unknown (id 255)

Enjoy...

GNUPOD

2009-05-28T17:00:00.005+05:30

Hi All..

Ipod management for Linux users, GNUPOD makes it very very easy... :-), I was using previously iTunes when i was unaware of of gnupod, Though i use linux for each work, i got new tool 'GnuPod' to manage my ipod. Installation & Using gnupod is simple. Follow the instruction to install & configure your new ipod management tool...

For Debian & Ubuntu Users:

Installation Of Gnu POd :

1. apt-cache search gnupod-tools
( Search for gnupod tools)

2. apt-get install gnupod-tools
( Installs the package)

3. apt-get install libtimedate-perl

Don't forget to install this package, If its installed not a problem, it not do it.

4. Plug in your Ipod, Mount it.

mount /dev/usbdisk /mount_point

5. If want you can take backup of it.

6. After taking backup, Remove data from mounted partition

rm -rf /mount_point

7. Preparation

gnupod_INIT -m /mount_point ( If the iPod is freshly formatted or you never used GNUpod before with this iPod, run this)

8. Adding files to Gnupod

gnupod_addsong -m /mount_point filename.mp3

OR

You can specify the list of files to add.

9. After adding files

mktunes -m /mount_point

10. Umount the device.
umount /dev/usbdisk

11. Ready to use your Ipod.

For More Info : http://www.gnu.org/software/gnupod/gnupod.html

Happy gnupod.

LOGIN USING SSH KEYS

2009-04-10T17:10:00.002+05:30

1.ssh-keygen generates, manages and converts authentication keys for ssh

root:~#ssh-keygen -t dsa
Generating public/private dsa key pair.
Enter file in which to save the key (/root/.ssh/id_dsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_dsa.
Your public key has been saved in /root/.ssh/id_dsa.pub.
The key fingerprint is:
97:67:2b:55:6a:7e:ed:c3:e2:3e:14:3e:1b:7a:ee:12 root@localhost

After Running This Command, You will find id_dsa.pub file in ~root/.ssh/id_dsa.pub

2. Copy that id_dsa.pub file to another machine.

root:~# scp ~root/.ssh/id_dsa.pub root@host:.ssh/authorized_keys2

3. Now try to login using ssh root@xxxx

Enjoy.. :-)

Hindi On Debian & Ubuntu Box

2009-04-06T11:04:00.001+05:30

1 .Install the following packages using apt-get install.

scim-uim scim-tables-additional scim-modules-table scim-m17n scim-gtk2-immodule scim uim-xim uim-utils uim-m17nlib uim scim-uim

2. Download The Font From Website.

http://www.bharatdarshan.co.nz/hindi_font_downloads.html

3. Make a directory ttf-hindi in /usr/share/fonts/truetype/

4. Copy the downloaded font to /usr/share/fonts/truetype/ttf-hindi/

5. Run fc-cache in /usr/share/fonts/truetype/ttf-hindi/

6. Open text editor & test it.

Enjoy.. :-)

Configure Postfix, Postfixadmin, Dovecot On Debian & Ubuntu

2009-03-07T15:06:00.003+05:30

Hi All..

Download Postfixadmin , put that webroot configure it.

vim /var/www/postfixadmin/config.inc.php

[...]
$CONF['configured'] = true;
$CONF['postfix_admin_url'] = 'http://yourdomain.tld/postfixadmin';

$CONF['database_type'] = 'mysql';
$CONF['database_host'] = 'localhost';
$CONF['database_user'] = 'postfixadmin';
$CONF['database_password'] = 'SecretPassword!';
$CONF['database_name'] = 'postfix';

$CONF['domain_path'] = 'YES';
$CONF['domain_in_mailbox'] = 'NO';
$CONF['encrypt'] = 'cleartext';

Take a look at the rest of that file if you need to make more tweaks.

You can quickly change the default domain to your own:

replace "change-this-to-your.domain.tld" "yourdomain.com" -- /usr/share/postfixadmin/config.inc.php
shell> mysql -u root -p
mysql> create database postfix;
mysql> grant all privileges on postfix.* to 'postfixadmin'@'localhost' identified by 'SecretPassword!';
mysql> flush privileges;
mysql> \q

Then browse to http://yourdomain.com/postfixadmin/ or http://yourip/postfixadmin/. It will prompt you to run Setup. Make sure the Setup Checker says ‘OK’ for everything.

Remove the setup.php as it recommends.

Then browse to http://yourdomain.com/postfixadmin/admin. You should get prompted. Login with the admin email you registered earlier in the setup page.
From here you can add domains, mailboxes, etc. But Postfix won’t see these yet. We need to install Postfix, and configure it.

Install Postfix, SASL2 with MySQL support

apt-get install postfix-mysql postfix-tls libsasl2-modules-sql libsasl2-modules

Add the following to /etc/postfix/main.cf

virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:106
virtual_mailbox_base = /home/vmail
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 106
virtual_transport = virtual
virtual_uid_maps = static:106

# grep postfix /etc/passwd
postfix:x:102:105::/var/spool/postfix:/bin/false
--> uid: 102; gid: 105

Create the following files in /etc/postfix/:

mysql_virtual_alias_maps.cf

user = postfix
password = SecretPassword!
hosts = localhost
dbname = postfix
table = alias
select_field = goto
where_field = address

mysql_virtual_domains_maps.cf

user = postfix
password = SecretPassword!
hosts = localhost
dbname = postfix
table = domain
select_field = domain
where_field = domain
additional_conditions = and backupmx = '0' and active = '1'

mysql_virtual_mailbox_maps.cf

user = postfix
password = SecretPassword!
hosts = localhost
dbname = postfix
table = mailbox
select_field = maildir
where_field = username

If you want to be be able to relay mail through your server with SMTP AUTH, setup the following in /etc/postfix/sasl/smtpd.conf:

pwcheck_method: auxprop
mech_list: PLAIN LOGIN
auxprop_plugin: sql
sql_verbose: yes
sql_engine: mysql
sql_hostnames: localhost
sql_user: postfix
sql_passwd: postfix
sql_database: postfix
sql_select: select password from mailbox where username ='%u@%r'

Create the directory structure, including a directory for the first domain. You’ll also want to go into PostfixAdmin and create a ‘test’ account for the yourdomain.com to match this.

mkdir -p /home/vmail/yourdomain.com/test
chmod -R 770 /home/vmail
chown -R postfix:postfix /home/vmail/

Install Dovecot with MySQL support

apt-get install dovecot-common dovecot-imapd dovecot-pop3d

Configure the Dovecot/MySQL setup in /etc/dovecot/dovecot-mysql.conf using these settings:

driver = mysql
connect = dbname=postfix user=postfixadmin host=localhost password=SecretPassword!
default_pass_scheme = PLAIN
password_query = SELECT password FROM mailbox WHERE username = '%u'
user_query = SELECT maildir, 106 AS uid, 106 AS gid FROM mailbox WHERE username = '%u'

Then configure Dovecot to use MySQL by setting these options in /etc/dovecot/dovecot.conf:

protocols = imap imaps pop3 pop3s
disable_plaintext_auth = no
log_timestamp = "%Y-%m-%d %H:%M:%S "
mail_location = maildir:/home/vmail/%d/%n
mail_access_groups = mail
first_valid_uid = 106
first_valid_gid = 106
protocol imap {
}

protocol pop3 {
pop3_uidl_format = %08Xu%08Xv
}
auth default {
mechanisms = digest-md5 plain
passdb sql {
args = /etc/dovecot/dovecot-mysql.conf
}
userdb sql {
args = /etc/dovecot/dovecot-mysql.conf
}
user = root
}

Restart Dovecot and Postfix and test it all out.

At the end of it, you should be able to add new domains, mailboxes and aliases using PostfixAdmin and have it all work properly, including SMTP authentication. Note that you don’t need saslauthd for SMTP authentication to work.

Enjoy.. :-)

SNMP and MRTG on Debian

2009-02-06T16:10:00.003+05:30

SNMP server configuration

Firstly, you need an SNMP server to provide network interface statstics on demand:

# apt-get install snmpd

You need to edit the configuration for this as it does not allow any connections by default. With your favourite editor, edit:

/etc/snmp/snmpd.conf

Comment out the following (prefix with #):

com2sec paranoid default public

Insert the following underneath the commented out section:

com2sec readonly default public

That gives anyone with access to the SNMP server read-only access to the public community. This is the one that contains the interface statistics.

To apply the changes, restart snmpd:

/etc/init.d/snmpd restart

Make sure you firewall off any SNMP related ports so that you don't get any unwanted visitors (check netstat and /etc/services for port information).

Installation of MRTG

MRTG is the main collection and graphing component of the traffic monitoring solution I am presenting here. Firstly, install MRTG:

# apt-get install mrtg

You can manually or automatically generate the configuration file for mrtg. I would recommend doing it automatically as it is a lot easier. Issue the following command:

# cfgmaker --global 'WorkDir: /var/www/mrtg' \
  --output /etc/mrtg.cfg public@127.0.0.1

This will generate the configuration file. You then need to make an index file which contains a list of all of your interfaces. Issue the following command:

# indexmaker /etc/mrtg.cfg --columns=1 \
  --output /var/www/mrtg/index.html

You will now need to execute mrtg manually 3 times to create the required database files. Issue the following command 3 times sequentially. On the third run, you should see no errors being reported:

# mrtg

This is executed every 5 minutes by cron. The cron job was added by dpkg for you so you do not have to configure it.


Enjoy...

Skype On Ubuntu & Debian

2009-01-29T15:14:00.002+05:30

Skype Instant messanger in Debian

As the root user, add this line to the end of your /etc/apt/sources.list file and save.

#vi /etc/apt/sources.list

deb http://download.skype.com/linux/repos/debian/ stable non-free

Now you need to update your source list using the following command

#apt-get update

Install Skype in debian

#apt-get install skype

This will install the latest version of Skype on your computer.

After finishing installation you can open skype from Applications–>Internet—>Skype you can see this in the following screen

Enjoy Skype.. :-)

Skype Instant messanger in Ubuntu

You need to edit your /etc/apt/sources.list file

sudo gedit /etc/apt/sources.list

add the following Repository and save the file

deb http://download.skype.com/linux/repos/debian/ stable non-free

Now you need to update your source list using the following command

sudo apt-get update

Install Skype in ubuntu

sudo apt-get install skype

This will install the latest version of Skype on your computer.

After finishing installation you can open skype from Applications–>Internet—>Skype you can see this in the following screen

Enjoy Skype... :-)

File Compression in Linux

2009-01-29T15:00:00.005+05:30

Hi..

These are the daily used simple compression tools in all linux boxes.

****Zip****

Create:
zip -r filename.zip filename(source file/dir)

Extract:
unzip filneame.zip

****Tar****

Create :
tar -cvf filename.tar filename(source file/dir)

Extract:
tar -xvf filename.tar

****Tar.gz****

Create
tar -cvzf filename.tar.gz filname(source file/dir)

Extract
tar -xzvf filename.tar.gz

****Tar.bz2****

Create
tar -cjvf filnema.tar.bz2 filname(source file/dir)

Extract:
tar -xjzf filename.tar.bz2

****GZ****

Create:
gzip filename

Extract:
gunzip filename.gz

****BZIP2****

Create:
bzip2 filname

Extract:
bunzip2 filname.bz2

Enjoy.. :-)