How to Permanently Delete Facebook Fan Page

In this post, i will share on how to delete Facebook fan page.

1. Once you have logged in to Facebook, go to the fan page you want to delete. Click on the “Edit Page” button at the top right hand corner of the Page.

2. Looking for Delete page and Click “Permanently delete……”.

3. By clicking “Permanently delete” you will get a warning message and by pressing delete your facebook page will delete permanently.

How to Install Zimbra Collaboration Suite 7.1.3 Mail Server on Redhat Enterprise Linux 5.5

In this post, i will share with you on how to install zimbra open source mail server on Redhat Enterprise Linux 5.5 server. According to wikipedia, Zimbra Collaboration Suite (ZCS) is a groupware product created by Zimbra, Inc. It was located in Palo Alto, California, USA. In September 2007, The company was purchased by Yahoo! and subsequently purchased by VMware on January 12, 2010. Two current available version of the zimbra are zimbra open-source version and zimbra network version. Zimbra Network is commercial edition of Zimbra Collaboration Suite.

Before we start to install the zimbra mail server, there are a few prerequisites that must be install and must be configure.

1. Stop sendmail and linux iptables firewall service as below:

[root@mail ~]# /etc/init.d/sendmail stop
or
[root@mail ~]# service sendmail stop
[root@mail ~]# chkconfig sendmail off
[root@mail ~]# /etc/init.d/iptables stop
or
[root@mail ~]# service iptablesstop
[root@mail ~]# chkconfig iptables off

2. The following packages required need to be installed before installing ZCS:
– NPTL (Native POSIX Thread Library – installed by default)
– sudo
– libidn
– gmp, and
– libstdc++
– perl
– sysstat
– sqlite

Please run this youn install to install all those packages:

[root@mail ~]# yum install nc, sudo, libidn, gmp, libstdc++, perl, sysstat, sqlite -y

3. Configure DNS server. In this example, i will use the server as a DNS server. So the ip of the DNS and mail server is the same.

[root@mail ~]# vi /var/named/chroot/var/named/zimbra.local
;
;       Addresses and other host information.
;
@       IN      SOA     zimbra.local. hostmaster.zimbra.local. (
                               2011030801      ; Serial
                               43200      ; Refresh
                               3600       ; Retry
                               3600000    ; Expire
                               2592000 )  ; Minimum

;       Define the nameservers and the mail servers

               IN      NS      ns.zimbra.local.
               IN      A       192.168.1.42
               IN      MX      10 mail.zimbra.local.

mail            IN      A       192.168.1.42
ns              IN      A       192.168.1.42
[root@mail ~]# vi /var/named/chroot/etc/named.conf
options {
       directory "/var/named";
       dump-file "/var/named/data/cache_dump.db";
       statistics-file "/var/named/data/named_stats.txt";
forwarders { 8.8.8.8; };
};
include "/etc/rndc.key";
// We are the master server for zimbra.local

zone "zimbra.local" {
    type master;
    file "zimbra.local";
};

4. Configure hosts file correctly:

[root@mail ~]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1               localhost.localdomain localhost
::1             localhost6.localdomain6 localhost6
192.168.1.42    mail.zimbra.local mail

5. Verify the DNS records using host command. Host command is one of the bind utilities. Beside host, you also can use dig and nslookup to test your dns configuration.

[root@mail ~]# host -t mx zimbra.local
zimbra.local mail is handled by 10 mail.zimbra.local.

6. Download the software from zimbra website.

[root@mail ~]# wget http://files.zimbra.com/downloads/7.1.3_GA/zcs-7.1.3_GA_3346.RHEL5.20110928134520.tgz

7. Extract the ZCS package and run ./install.sh to start installation.

[root@mail ~]# tar xzvf zcs-7.1.3_GA_3346.RHEL5.20110928134520.tgz
[root@mail ~]# cd zcs-7.1.3_GA_3346.RHEL5.20110928134520
[root@mail zcs-7.1.3_GA_3346.RHEL5.20110928134520]# ./install.sh

Operations logged to /tmp/install.log.2674
Checking for existing installation...
    zimbra-ldap...NOT FOUND
    zimbra-logger...NOT FOUND
    zimbra-mta...NOT FOUND
    zimbra-snmp...NOT FOUND
    zimbra-store...NOT FOUND
    zimbra-apache...NOT FOUND
    zimbra-spell...NOT FOUND
    zimbra-convertd...NOT FOUND
    zimbra-memcached...NOT FOUND
    zimbra-proxy...NOT FOUND
    zimbra-archiving...NOT FOUND
    zimbra-cluster...NOT FOUND
    zimbra-core...NOT FOUND

PLEASE READ THIS AGREEMENT CAREFULLY BEFORE USING THE SOFTWARE.
ZIMBRA, INC. ("ZIMBRA") WILL ONLY LICENSE THIS SOFTWARE TO YOU IF YOU
FIRST ACCEPT THE TERMS OF THIS AGREEMENT. BY DOWNLOADING OR INSTALLING
THE SOFTWARE, OR USING THE PRODUCT, YOU ARE CONSENTING TO BE BOUND BY
THIS AGREEMENT. IF YOU DO NOT AGREE TO ALL OF THE TERMS OF THIS
AGREEMENT, THEN DO NOT DOWNLOAD, INSTALL OR USE THE PRODUCT.

License Terms for the Zimbra Collaboration Suite:
  http://www.zimbra.com/license/zimbra_public_eula_2.1.html

Do you agree with the terms of the software license agreement? [N] y

Checking for prerequisites...
     FOUND: NPTL
     FOUND: nc-1.84-10
     FOUND: sudo-1.7.2p1-5
     FOUND: libidn-0.6.5-1.1
     FOUND: gmp-4.1.4-10
     FOUND: /usr/lib/libstdc++.so.6
Checking for suggested prerequisites...
     FOUND: perl-5.8.8
     FOUND: sysstat
     FOUND: sqlite
Prerequisite check complete.

Checking for installable packages

Found zimbra-core
Found zimbra-ldap
Found zimbra-logger
Found zimbra-mta
Found zimbra-snmp
Found zimbra-store
Found zimbra-apache
Found zimbra-spell
Found zimbra-memcached
Found zimbra-proxy

Select the packages to install

Install zimbra-ldap [Y]

Install zimbra-logger [Y]

Install zimbra-mta [Y]

Install zimbra-snmp [Y]

Install zimbra-store [Y]

Install zimbra-apache [Y]

Install zimbra-spell [Y]

Install zimbra-memcached [N]

Install zimbra-proxy [N]
Checking required space for zimbra-core
checking space for zimbra-store

Installing:
    zimbra-core
    zimbra-ldap
    zimbra-logger
    zimbra-mta
    zimbra-snmp
    zimbra-store
    zimbra-apache
    zimbra-spell

The system will be modified.  Continue? [N] y

Removing /opt/zimbra
Removing zimbra crontab entry...done.
done.
Cleaning up zimbra init scripts...done.
Cleaning up /etc/ld.so.conf...done.
Cleaning up /etc/prelink.conf...done.
Cleaning up /etc/security/limits.conf...done.

Finished removing Zimbra Collaboration Suite.

Installing packages

    zimbra-core......zimbra-core-7.1.3_GA_3346.RHEL5-20110928134520.i386.rpm...done
    zimbra-ldap......zimbra-ldap-7.1.3_GA_3346.RHEL5-20110928134520.i386.rpm...done
    zimbra-logger......zimbra-logger-7.1.3_GA_3346.RHEL5-20110928134520.i386.rpm...done
    zimbra-mta......zimbra-mta-7.1.3_GA_3346.RHEL5-20110928134520.i386.rpm...done
    zimbra-snmp......zimbra-snmp-7.1.3_GA_3346.RHEL5-20110928134520.i386.rpm...done
    zimbra-store......zimbra-store-7.1.3_GA_3346.RHEL5-20110928134520.i386.rpm...done
    zimbra-apache......zimbra-apache-7.1.3_GA_3346.RHEL5-20110928134520.i386.rpm...done
    zimbra-spell......zimbra-spell-7.1.3_GA_3346.RHEL5-20110928134520.i386.rpm...done
Operations logged to /tmp/zmsetup.12202011-035130.log
Installing LDAP configuration database...done.
Setting defaults...

DNS ERROR resolving MX for mail.zimbra.local
It is suggested that the domain name have an MX record configured in DNS
Change domain name? [Yes]
Create domain: [mail.zimbra.local] zimbra.local
        MX: mail.zimbra.local (192.168.1.42)

        Interface: 192.168.1.42
        Interface: 127.0.0.1
done.
Checking for port conflicts

Main menu

   1) Common Configuration:
   2) zimbra-ldap:                             Enabled
   3) zimbra-store:                            Enabled
        +Create Admin User:                    yes
        +Admin user to create:                 admin@zimbra.local
******* +Admin Password                        UNSET
        +Anti-virus quarantine user:           virus-quarantine.iqk4l5dgz@zimbra.local
        +Enable automated spam training:       yes
        +Spam training user:                   spam.f8azigt_ug@zimbra.local
        +Non-spam(Ham) training user:          ham.ddnnjfq5a@zimbra.local
        +SMTP host:                            mail.zimbra.local
        +Web server HTTP port:                 80
        +Web server HTTPS port:                443
        +Web server mode:                      http
        +IMAP server port:                     143
        +IMAP server SSL port:                 993
        +POP server port:                      110
        +POP server SSL port:                  995
        +Use spell check server:               yes
        +Spell server URL:                     http://mail.zimbra.local:7780/aspell.php
        +Configure for use with mail proxy:    FALSE
        +Configure for use with web proxy:     FALSE
        +Enable version update checks:         TRUE
        +Enable version update notifications:  TRUE
        +Version update notification email:    admin@zimbra.local
        +Version update source email:          admin@zimbra.local

   4) zimbra-mta:                              Enabled
   5) zimbra-snmp:                             Enabled
   6) zimbra-logger:                           Enabled
   7) zimbra-spell:                            Enabled
   8) Default Class of Service Configuration:
   r) Start servers after configuration        yes
   s) Save config to file
   x) Expand menu
   q) Quit

Address unconfigured (**) items  (? - help) 3

Store configuration

   1) Status:                                  Enabled
   2) Create Admin User:                       yes
   3) Admin user to create:                    admin@zimbra.local
** 4) Admin Password                           UNSET
   5) Anti-virus quarantine user:              virus-quarantine.iqk4l5dgz@zimbra.local
   6) Enable automated spam training:          yes
   7) Spam training user:                      spam.f8azigt_ug@zimbra.local
   8) Non-spam(Ham) training user:             ham.ddnnjfq5a@zimbra.local
   9) SMTP host:                               mail.zimbra.local
  10) Web server HTTP port:                    80
  11) Web server HTTPS port:                   443
  12) Web server mode:                         http
  13) IMAP server port:                        143
  14) IMAP server SSL port:                    993
  15) POP server port:                         110
  16) POP server SSL port:                     995
  17) Use spell check server:                  yes
  18) Spell server URL:                        http://mail.zimbra.local:7780/aspell.php
  19) Configure for use with mail proxy:       FALSE
  20) Configure for use with web proxy:        FALSE
  21) Enable version update checks:            TRUE
  22) Enable version update notifications:     TRUE
  23) Version update notification email:       admin@zimbra.local
  24) Version update source email:             admin@zimbra.local

Select, or 'r' for previous menu [r] 4

Password for admin@zimbra.local (min 6 characters): [KGl9iDfP2] password

Store configuration

   1) Status:                                  Enabled
   2) Create Admin User:                       yes
   3) Admin user to create:                    admin@zimbra.local
   4) Admin Password                           set
   5) Anti-virus quarantine user:              virus-quarantine.iqk4l5dgz@zimbra.local
   6) Enable automated spam training:          yes
   7) Spam training user:                      spam.f8azigt_ug@zimbra.local
   8) Non-spam(Ham) training user:             ham.ddnnjfq5a@zimbra.local
   9) SMTP host:                               mail.zimbra.local
  10) Web server HTTP port:                    80
  11) Web server HTTPS port:                   443
  12) Web server mode:                         http
  13) IMAP server port:                        143
  14) IMAP server SSL port:                    993
  15) POP server port:                         110
  16) POP server SSL port:                     995
  17) Use spell check server:                  yes
  18) Spell server URL:                        http://mail.zimbra.local:7780/aspell.php
  19) Configure for use with mail proxy:       FALSE
  20) Configure for use with web proxy:        FALSE
  21) Enable version update checks:            TRUE
  22) Enable version update notifications:     TRUE
  23) Version update notification email:       admin@zimbra.local
  24) Version update source email:             admin@zimbra.local

Select, or 'r' for previous menu [r] r

Main menu

   1) Common Configuration:
   2) zimbra-ldap:                             Enabled
   3) zimbra-store:                            Enabled
   4) zimbra-mta:                              Enabled
   5) zimbra-snmp:                             Enabled
   6) zimbra-logger:                           Enabled
   7) zimbra-spell:                            Enabled
   8) Default Class of Service Configuration:
   r) Start servers after configuration        yes
   s) Save config to file
   x) Expand menu
   q) Quit

*** CONFIGURATION COMPLETE - press 'a' to apply
Select from menu, or press 'a' to apply config (? - help) a
Save configuration data to a file? [Yes] yes
Save config in file: [/opt/zimbra/config.8980] yes
Saving config in yes...done.
The system will be modified - continue? [No] yes
Operations logged to /tmp/zmsetup.12202011-035130.log
Setting local config values...done.
Setting up CA...done.
Deploying CA to /opt/zimbra/conf/ca ...done.
Creating SSL certificate...done.
Installing mailboxd SSL certificates...done.
Initializing ldap...done.
Setting replication password...done.
Setting Postfix password...done.
Setting amavis password...done.
Setting nginx password...done.
Setting BES searcher  password...done.
Creating server entry for mail.zimbra.local...done.
Saving CA in ldap ...done.
Saving SSL Certificate in ldap ...done.
Setting spell check URL...done.
Setting service ports on mail.zimbra.local...done.
Adding mail.zimbra.local to zimbraMailHostPool in default COS...done.
Installing webclient skins...
        steel...done.
        carbon...done.
        tree...done.
        sand...done.
        beach...done.
        smoke...done.
        waves...done.
        sky...done.
        bones...done.
        bare...done.
        oasis...done.
        pebble...done.
        twilight...done.
        lake...done.
        lemongrass...done.
        lavender...done.
        hotrod...done.
Finished installing webclient skins.
Setting zimbraFeatureTasksEnabled=TRUE...done.
Setting zimbraFeatureBriefcasesEnabled=TRUE...done.
Setting MTA auth host...done.
Setting TimeZone Preference...done.
Initializing mta config...done.
Setting services on mail.zimbra.local...done.
Creating domain zimbra.local...done.
Setting default domain name...done.
Creating domain zimbra.local...already exists.
Creating admin account admin@zimbra.local...done.
Creating root alias...done.
Creating postmaster alias...done.
Creating user spam.f8azigt_ug@zimbra.local...done.
Creating user ham.ddnnjfq5a@zimbra.local...done.
Creating user virus-quarantine.iqk4l5dgz@zimbra.local...done.
Setting spam training and Anti-virus quarantine accounts...done.
Initializing store sql database...done.
Setting zimbraSmtpHostname for mail.zimbra.local...done.
Configuring SNMP...done.
Checking for default IM conference room...not present.
Initializing default IM conference room...done.
Setting up syslog.conf...done.

You have the option of notifying Zimbra of your installation.
This helps us to track the uptake of the Zimbra Collaboration Suite.
The only information that will be transmitted is:
        The VERSION of zcs installed (7.1.3_GA_3346_RHEL5)
        The ADMIN EMAIL ADDRESS created (admin@zimbra.local)

Notify Zimbra of your installation? [Yes] no
Notification skipped
Starting servers...done.
Installing common zimlets...
        com_zimbra_email...done.
        com_zimbra_linkedin...done.
        com_zimbra_attachmail...done.
        com_zimbra_webex...done.
        com_zimbra_bulkprovision...done.
        com_zimbra_date...done.
        com_zimbra_dnd...done.
        com_zimbra_attachcontacts...done.
        com_zimbra_url...done.
        com_zimbra_social...done.
        com_zimbra_srchhighlighter...done.
        com_zimbra_phone...done.
        com_zimbra_cert_manager...done.
        com_zimbra_adminversioncheck...done.
Finished installing common zimlets.
Restarting mailboxd...done.
Setting up zimbra crontab...done.

Moving /tmp/zmsetup.12202011-035130.log to /opt/zimbra/log

Configuration complete - press return to exit

8. Your installation completed.
Zimbra Webmail URL for users:
http://mail.zimbra.local

Zimbra Admin console URL for zimbra administrator :
https://mail.zimbra.local:7071

How to Fix nslookup, host, dig: -bash: command not found in Linux?

Symptoms:

When i try to verify the dns and run a few dns command utilities such as host, dig and nslookup, below error appeared:

    [root@mail ~]# host -t mx zimbra.local
    bash: host: command not found
    [root@mail ~]# dig -t mx zimbra.local
    bash: dig: command not found
    [root@mail ~]# nslookup -t mx zimbra.local
    bash: nslookup: command not found
    

Findings:
If you have above problems in your Linux server, probably you might be missing the package that contains bind utilities. Please note that the host, dig and nslookup are part of the bind utilities.

Solution:

Run this command to install the bind utilities.

    [root@mail ~]# yum install bind-utils
    Setting up Install Process
    Setting up repositories
    Reading repository metadata in from local files
    Parsing package install arguments
    Resolving Dependencies
    --> Populating transaction set with selected packages. Please wait.
    ---> Downloading header for bind-utils to pack into transaction set.
    bind-utils-9.3.6-4.P1.el5_4.2.i386.rpm                                      |  43 kB     00:00
    ---> Package bind-utils.i386 30:9.3.6-4.P1.el5_4.2 set to be updated
    --> Running transaction check
    
    Dependencies Resolved
    
    =============================================================================
     Package                 Arch       Version          Repository        Size
    =============================================================================
    Installing:
     bind-utils              i386       30:9.3.6-4.P1.el5_4.2  rhellocalrepo     170 k
    
    Transaction Summary
    =============================================================================
    Install      1 Package(s)
    Update       0 Package(s)
    Remove       0 Package(s)
    Total download size: 170 k
    Is this ok [y/N]: y
    Downloading Packages:
    Running Transaction Test
    warning: bind-utils-9.3.6-4.P1.el5_4.2: Header V3 DSA signature: NOKEY, key ID 37017186
    Finished Transaction Test
    Transaction Test Succeeded
    Running Transaction
      Installing: bind-utils                   ######################### [1/1]
    
    Installed: bind-utils.i386 30:9.3.6-4.P1.el5_4.2
    Complete!
    

How to Install wget on Linux RHEL 6/7, CentOS 6/7, Oracle Linux 6/7

Wget is a free network utility to download files from the Web using http and ftp, the two most widely used Internet protocols. Wget utility is available for free and licensed is under GNU GPL License. However, it’s also supports https protocol as well as retrieval through HTTP proxies. This article will describe how to install wget on linux RHEL 6/7, CentOS 6/7 and Oracle Linux 6/7.

Symptom:
When you try to download something from linux server, you get this error message.

# wget http://pkgs.repoforge.org/yum/yum-2.4.2-0.4.el5.rf.noarch.rpm
-bash: wget: command not found

Findings:
Looks like you don’t have wget installed on your linux server

Solution:
Please install wget using yum command as below.

# yum install wget -y

How to download single file without change the file name :

# wget http://pkgs.repoforge.org/yum/yum-2.4.2-0.4.el5.rf.noarch.rpm

How to download file using wget with different name ?

# wget -O wget-filename.zip http://pkgs.repoforge.org/yum/yum-2.4.2-0.4.el5.rf.noarch.rpm

I hope this article gives you some ideas and essential guidance on how to install wget on Linux RHEL 6/7, CentOS 6/7, Oracle Linux 6/7.

 

How to Install Yum on Red Hat Enterprise Linux 5 (RHEL)

In this post, i will share out on how to install yum on Red Hat Enterprise Linux 5 (RHEL). This steps applies to most of Red Hat Enterprise Linux version 5. If you want to use on other systems or architectures, please check the packages version.

To download yum package for Red Hat Enterprise Linux 5, run this command:

    [root@redhatserver ~]# wget ftp://ftp.is.co.za/mirror/ftp.rpmforge.net/redhat/el5/en/ppc/fabian/RPMS/yum-2.4.2-0.4.el5.rf.noarch.rpm
    --2011-12-17 22:29:58--  ftp://ftp.is.co.za/mirror/ftp.rpmforge.net/redhat/el5/en/ppc/fabian/RPMS/yum-2.4.2-0.4.el5.rf.noarch.rpm
               => `yum-2.4.2-0.4.el5.rf.noarch.rpm'
    Resolving ftp.is.co.za... 196.4.160.12
    Connecting to ftp.is.co.za|196.4.160.12|:21... connected.
    Logging in as anonymous ... Logged in!
    ==> SYST ... done.    ==> PWD ... done.
    ==> TYPE I ... done.  ==> CWD /mirror/ftp.rpmforge.net/redhat/el5/en/ppc/fabian/RPMS ... done.
    ==> SIZE yum-2.4.2-0.4.el5.rf.noarch.rpm ... 458049
    ==> PASV ... done.    ==> RETR yum-2.4.2-0.4.el5.rf.noarch.rpm ... done.
    Length: 458049 (447K)
    
    100%[====================================================>] 458,049     92.8K/s   in 4.8s
    
    2011-12-17 22:30:09 (92.8 KB/s) - `yum-2.4.2-0.4.el5.rf.noarch.rpm' saved [458049]
    

To install the yum, run this command:

    [root@redhatserver ~]# rpm -ivh yum-2.4.2-0.4.el5.rf.noarch.rpm
    warning: yum-2.4.2-0.4.el5.rf.noarch.rpm: Header V3 RSA/SHA1 signature: NOKEY, key ID 9def3191
    Preparing...                ########################################### [100%]
       1:yum                    ########################################### [100%]
    

How to Configure Gmail IMAP in Mozilla Thunderbird Version 3.1

Gmail or google mail is one of the free email services which supports IMAP feature. It’s enables you to send and receive emails from email client software such as Mozilla Thunderbird or Microsoft Outlook. In this post, i will share with you on how to set up gmail IMAP account in Mozilla Thunderbird version 3.1. Please make sure that the Mozilla Thunderbird has been installed on your computer.

1. Login to your Gmail account. Go to Mail Setting and then click “Forwarding and POP/IMAP”. Click the Enable IMAP radio button, and save the changes.

2. Open your Mozilla Thunderbird, click tools and then Account Setting.

3. On the Account Setting, click Add Mail Account…

4. Please fill in the Mail Account Setup and click Continue.

5. Now verify the Mail Account Setting and click Create Account to continue.

6. On Account Settings, please verify the Account Info, Server Setting and Outgoing Server (SMTP) are configured correctly

7. Now, enjoy to use gmail in Mozilla Thunderbird.

How to Remove “Undefined” date in Blogspot Templates

When you upload a new blogspot template from third party designer to your blogspot and found that the date for your post was “undefined”. This is actually an error, then you have to correct it. This “Undefined” error will appeared in every post instead of the blog post date.

undefined error

The reason for this error is the blog timestamp does not match with the one required. To fix this error, you have to follow this simple steps:

1. Loging to your blogger dashboard
2. Go to Setting
3. Go to Formatting
4. Modify the Date Header Format, Archive Index Date Format and Timestamp Format as below.

5. Click Save button.