How to migrate joomla from version 1.0 to 1.5

Here is how to Migrate Joomla from version 1.0 to 1.5.x stable

The most important thing before proceeding with the steps below is to take the backup of  the current Joomla you are having and also database it will be safe.

1. You need to install the component called migrator for the current version of  Joomla1.0.x

2. Then go to "Components" option in your Joomla admin page then select "Migrator"

3. Then select the "Create Migration SQL" file option

4. Then download the SQL file using the download option and place it in the Local system or FTP it to your server

 

 5. Download the Stable release Joomla 1.5 from Joomla from the site below and

http://www.joomla.org/download.html

6. Step 4. Perform the migration

Proceed with the installation until you reach Step 6: Configuration:

 7. Fill the site name, email, admin user name and password . The imp thing to keep on mind is to select the option 'Load Migration Script'.

8. Fill the old table prefix _jos and leave the encoding unchanged unless needed and you are familiar with this option.

By clicking on the [Browse] button you should select the Joomla 1.0.x migration dump you downloaded earlier.

Make sure to check the This script is a Joomla! 1.0 migration script. check box as well.

Proceed by clicking on the [Upload and execute] button.

Once the data is imported you will see the following screen

9.As always remove the installation directory and access the joomla admin.

How does Qmail work

Qmail : How does it work ?

Qmail programs & configuration files
Qmail works using about 15 small programs. It also uses a pretty large number of configuration files. At the beginning, this may appear as quite confusing. Once you are familiarised with these configuration files & programs, qmail administration will be easier.

Qmail programs

Qmail continuously runs 5 daemons. Remaining 10 programs are launched by these 5 daemons as and when required.

Let us see which are the 5 daemons.

1. qmail-send
2. qmail-lspawn
3. qmail-rspawn
4. qmail-clean
5. tcpserver

How Qmail works

1. Email arrival in Qmail

Mail arrives in Qmail in two different ways.

(i) Locally injected emails.

There is a program called sendmail that comes with qmail. It is a program that mimics functionality of legacy sendmail, its arguments are also similar. sendmail accepts the local email and passes it to qmail-inject.

(ii) Remote emails arrived via SMTP

* tcpserver listens incoming connections on the SMTP port.
* upon a new SMTP connection, qmail-smtpd is launched.
* qmail-smtpd receives emails via SMTP.



2. Queuing emails

* qmail-inject & qmail-smpd pass received emails to qmail-queue.
* qmail-queue places emails in the folder /var/qmail/todo
* qmail-queue adds necessary headers to emails
* Then, it notifies qmail-send about newly queued emails.

3. Processing queued emails

* qmail-send takes the message out of /var/qmail/queue/todo folder
* qmail-send checks the recipient address of the email
* If the recipient addres is local, email is passed to qmail-lspwan
* If the recipient address is remote, email is passed to qmail-rspawn

4. Email delivery to local and remote recipients

* qmail-lspawn passes email to qmail-local
* qmail-local delivers email to local email address
* qmail-rspawn passes email to qmail-remote
* qmail-remote connects to remote mail server and delivers email to remote email address

5. Cleaning queue after delivering emails

* Once all messages are delivered, qmail-send notifies qmail-clean
* qmail-clean removes the delivered emails from the queue

Qmail configuration files

Qmail configuration files are located in the folder /var/qmail/control.

1. badmailfrom
All "from addresses" which are blacklisted.

2. bouncefrom
It is the bounce email from address. Usually it is "mailer-daemon".

3. bouncehost
It is host name of server

4. concurrencyincoming
Maximum number of simultaneous incoming SMTP connections allowed.

5. concurrencylocal
Maximum number of simultaneous local deliveries

6. concurrencyremote
Maximum number of simultaneous remote deliveries

7. defaultdomain
Default domain name of server

8. defaulthost
Host name of server

9. databytes
Maximum number of bytes in message (0=no limit)

10. doublebouncehost
It is the bounce email from address. Usually it is "mailer-daemon".

11. doublebounceto
It is the bounce email to address. Usually it is "postmaster".

12. helohost
It is the host name used in SMTP HELO command

13. idhost
It is host name of server. It is used when creating Message-ID.

13. localiphost
It is local IP address

14. locals
List of all local domains.

15. me
It is the hostname of server

16. morercpthosts
Only 50 domains can be added in rcpthosts, remaining domains should be in morercpthosts.

17. queuelifetime
It is the number of seconds an email can remain in queue

18. rcpthosts
Domains of all locally hosted email addresses.

19 smtpgreeting
It is the SMTP greeting message used by mail server.

20. timeoutconnect
Time in seconds, the server has to wait for SMTP connection

21. timeoutremote
Time in seconds, server has to wait for remote server

22. timeoutsmtpd
Time in seconds, server has to wait for SMTP client

23. virtualdomains
List of all virtual domains