Relaying mail in postfix

We have new server configured, the problem is the ISP. They not allow port 25 for sending mail. Fortunately we have another existing postfix server . After edit in new server, we can send email through existing server. The only change to do is : Edit, find relayhost line and add existing server …


mod_unique_id: unable to gethostbyname

Yes, that message display when I try to start apache inside my jail box.  [Thu Jul 10 13:23:41 2008] [alert] mod_unique_id: unable to gethostbyname(”mailserver”) To resolve this problem, just edit /etc/hosts add record for ‘mailserver’ entry, like : ::1                     localhost               localhost     mailserver Restart apache and test it yourself.

Install Djbdns on Ubuntu Server

I’m big fan of djbdns for its simplicity. After one of our server must change to vmware server and ubuntu chosen as main OS I still want to use djbdns for handling domain resolution. Searching on internet guide for installing djbdns on ubuntu give me to this link. I try to follow it and it …


Mounting Hard Disk on Ubuntu

One of our server need to reconfigure. Install ubuntu server on it and will convert other hardisk for special purpose on vmware appliance. In fact the server have 4 HD, 1 for system and 3 HD dedicated for virtual appliance. This steps taken to format and mounting : 1. See current mount point and space …


Unknown setting: mail_privileged_group

Downgrade dovecot to 1.0.10 give me error : mail# /usr/local/etc/rc.d/dovecot start Starting dovecot. Error: Error in configuration file /usr/local/etc/dovecot.conf line 262: Unknown setting: mail_privileged_group Fatal: Invalid configuration in /usr/local/etc/dovecot.conf Find line 262, talk about mail_priveleged_group solution : change mail_privileged_group = mail into mail_extra_groups = mail and start dovecot service. Work

Download Manager for Linux

My wife ask me what application she can use for download file from internet. She just install Ubuntu. I used to use wget but I think it’s not the right time for her to touch command line After searching on internet I pick one D4X. Here’s my steps for installing download manager (D4x) in Ubuntu …


Could not determine the server’s fully qualified domain name

Thats message appear when I try to start apache using apachectl. #apachectl start [Thu Jun  5 16:31:33 2008] [alert] httpd: Could not determine the server’s fully qualified domain name, using for ServerName /usr/local/sbin/apachectl start: httpd could not be started to solve this problem I need to know hostname and edit /etc/hosts to put that …


LinuxSuse, count me in …

With recent version of linux suse 11 I got surprised to see big enhancement after my friend show me two books about OpenSuse. 1. openSUSE Linux Unleashed Review from amazon : [amazonify]067232945X:right[/amazonify]openSUSE Linux Unleashed presents comprehensive coverage of the community version of SUSE Linux, one of the most popular and most complete Linux distributions in …


Reset Cacti Password, step by step

My other staff  ask me password for username admin. Yes, its administrator level in cacti. After hardy trying to remember I gave up, I decide to reset it to other value but how? I try to find out using database approach : Here’s my steps : 1. Checking for cacti location and see db setting. …


Dnscache access little secret

My friend just install dns server using djbdns, he use two component in djbdns: tinydns dnscache After follow all setup in tutorial, he try to test the dnscache : mail# dig ; <<>> DiG 9.3.4-P1 <<>> ;; global options:  printcmd ;; connection timed out; no servers could be reached mail#

Unix/Linux for Beginner, list of resources

Some common question I see in Installation of Unix/Linux : What command I should I type? When I can start hacking? When I start learning hacking? Do you have resources for beginner for me? Not sure, I’m search engine lovers Here’s the lists : Books : Hacking Ubuntu: Serious Hacks Mods and Customizations (ExtremeTech) Google …