facing problem, while installig postfix mail server

I want to install Postfix mail server on my 12.10 Ubuntu server I'm unable to receive same output as given below. I'm following instructions given at link at "http://www.howtoforge.com"

"""
root@server1:/usr/src# ls -l
total 6928
drwxr-xr-x 24 root root 4096 Oct 19 12:56 linux-headers-3.5.0-17
drwxr-xr-x 7 root root 4096 Oct 19 12:56 linux-headers-3.5.0-17-generic
drwxr-xr-x 18 root root 4096 Nov 4 14:11 postfix-2.9.3
-rw-r--r-- 1 root root 3809 Nov 4 14:11 postfix_2.9.3-2ubuntu2_amd64.changes
-rw-r--r-- 1 root root 1510254 Nov 4 14:11 postfix_2.9.3-2ubuntu2_amd64.deb
-rw-r--r-- 1 root root 249645 Nov 4 14:10 postfix_2.9.3-2ubuntu2.diff.gz
-rw-r--r-- 1 root root 1599 Nov 4 14:10 postfix_2.9.3-2ubuntu2.dsc
-rw-r--r-- 1 root root 3760555 May 30 18:04 postfix_2.9.3.orig.tar.gz
-rw-r--r-- 1 root root 47064 Nov 4 14:11 postfix-cdb_2.9.3-2ubuntu2_amd64.deb
-rw-r--r-- 1 root root 159634 Nov 4 14:11 postfix-dev_2.9.3-2ubuntu2_all.deb
-rw-r--r-- 1 root root 1077006 Nov 4 14:11 postfix-doc_2.9.3-2ubuntu2_all.deb
-rw-r--r-- 1 root root 55430 Nov 4 14:11 postfix-ldap_2.9.3-2ubuntu2_amd64.deb
-rw-r--r-- 1 root root 48796 Nov 4 14:11 postfix-mysql_2.9.3-2ubuntu2_amd64.deb
-rw-r--r-- 1 root root 48964 Nov 4 14:11 postfix-pcre_2.9.3-2ubuntu2_amd64.deb
-rw-r--r-- 1 root root 48978 Nov 4 14:11 postfix-pgsql_2.9.3-2ubuntu2_amd64.deb
-rw-r--r-- 1 root root 55009 Apr 11 2012 postfix-vda-v11-2.9.1.patch
root@server1:/usr/src#
"""
I am receiving
"""
root@lroms:/usr/src# ls -l
total 3976
drwxr-xr-x 24 root root 4096 Jan 25 06:51 linux-headers-3.5.0-22
drwxr-xr-x 7 root root 4096 Jan 25 06:51 linux-headers-3.5.0-22-generic
drwxr-xr-x 18 root root 4096 Jan 28 13:45 postfix-2.9.3
-rw-r--r-- 1 root root 229715 Aug 19 20:04 postfix_2.9.3-2ubuntu2.diff.gz
-rw-r--r-- 1 root root 2137 Aug 19 20:04 postfix_2.9.3-2ubuntu2.dsc
-rw-r--r-- 1 root root 3760555 May 30 2012 postfix_2.9.3.orig.tar.gz
-rw-r--r-- 1 root root 55009 Apr 11 2012 postfix-vda-v11-2.9.1.patch
"""

That's why I am also unable to run this command

"""
dpkg -i postfix_2.9.3-2ubuntu2_amd64.deb postfix-mysql_2.9.3-2ubuntu2_amd64.deb
"""


Please guide me that what I should do, Waiting for your urgent reply.

 

Please post the URL of the tutorial you used.

The output looks as if you didn't rebuild Postfix.

 

I am following this link " http://www.howtoforge.com/virtual-u...x-courier-mysql-and-squirrelmail-ubuntu-12.10 "
And,I am performing all the steps very carefully, I don't know why even then I am facing such problems

 

Did you see any error messages when you followed the tutorial?

 

No, I didn't receive any error message, while following steps given in this tutorial. Till this step everything works fine.

 

Well, something must have gone wrong. Please start again from scratch.