This is a quick walk through on how to set up domain keys on Centos 5 using sendmail. It should also be very similar for Redhat or Fedora.

Posted on March 9th, 2010 by Denie
Filed under: BASH, CentOS, Linux, Sendmail, Tutorials | No Comments »

Features: Voice-Activated Dialing, MMS Enabled, Global Ready, Video Recording, Color Screen, Bluetooth Enabled, GPS, Calendar, Email Access, Internet Browser, Wi-Fi Capable, SMS-Text Messaging, 3G Data Capable, QWERTY Keyboard, Speakerphone
Camera: 3 Megapixels & Up
Available Features
• Trackpad navigation
• Bright, hi-resolution screen
• Full QWERTY keyboard
• 3G technology
• Wi-Fi® and Bluetooth® enabled
• 256MB flash memory
• 3.2 MP digital camera with video camera
• Multimedia player
• Wireless email
• Organizer
• Browser
• Phone
• SMS/MMS 
Display
• High resolution 480×360 pixel
color display
• Transmissive TFT LCD
• Supports over 65,000 colors
• 2.44″ (diagonally measured)

Camera & Video Recording
• 3.2 MP Camera
• Auto Focus, Image Stabilization
• Flash
• 2X digital zoom

Video camera recording:
Normal Mode (480 x 352 pixel),
MMS Mode (176 x 144 pixel)
Maps & GPS
• Includes BlackBerry Maps
• Integrated GPS with A-GPS
Data Input & Navigation
• 35 key backlit QWERTY keyboard
• Dedicated Keys: Send, End, VAD (User Customizable), Camera (User Customizable), 2 x Volume/Zoom
• Trackpad – Located on front face of device, ESC Key to the right, Menu to the left
• Intuitive icons and menus
Voice Input & Output
• Integrated speaker and microphone
• Hands-free headset capable
• Bluetooth headset capable
• Integrated Hands-Free Speakerphone
• Rating for hearing aids (PDF): M3, T3 (in cellular bands only)
Media Player
• Video format support: XviD partially supported, H.263, H.264, WMV3, MPEG4, Sorenson Spark & On2 VP6 (Flash support)
• Audio format support: .3gp, MP3, WMA9 (.wma/.asf), WMA9 Pro / WMA 10, MIDI, AMR-NB, Professional AAC/AAC+/eAAC+
Ringtones & Notifications
• Tone, vibrate, on-screen or LED indicator
• Notification options are user configurable
• 32 Polyphonic Ringtones – MIDI, SP-MDI, MP3, WAV
Bluetooth
• Bluetooth® v2.1
• Mono/Stereo Headset
• Handsfree
• Serial Port Profile
• Bluetooth Stereo Audio (A2DP/AVCRP)
• Bluetooth SIM Access Profile supported
Security
• Password protection
• Screen lock
• Sleep mode
• Optional support for S/MIME
Wi-Fi
802.11 b/g
• UMA support
• Planned Wi-Fi Certifications: WPA, WPA2, WMM, WMM Power Save, Wi-Fi Protected Setup, Cisco CCX
Wireless Networks
3G (HSDPA) compatible
UMTS: 2100/1900/850/800 MHz (Bands 1,2,5/6), 2100/1700/900 MHz (Bands 1,4,8)
GSM: 1900/1800/900/850 MHz
Quad-band support: GSM 850; GSM

Posted on February 26th, 2010 by Denie
Filed under: Blackberry | No Comments »

Ada kekhawatiran para pengguna BlackBerry akan besarnya biaya roaming penggunaan GPRS saat berada di luar negeri, sehingga mereka tidak mengaktifkan layanan BlackBerry saat berada di luar negeri.

Tentunya solusi ini akhirnya malah merugikan karena aneh jika pengguna BlackBerry tidak update dengan informasi penting, dan sebaliknya karena ketidaktahuan akan biaya roaming seseorang selalu mengaktifkan layanan BlackBerry hampir tiap detik email, chatting, etc selalu masuk.

Kemudian yang terjadi setelah tiba di Indonesia kaget dengan tagihan bulanan yang fantastis, untuk menghindari 2 hal diatas. Berikut saat ketika kita melakukan perjalanan keluar negeri:

1. Ketika kita tiba di suatu negara namun tidak mendapatkan network roaming partner di area tersebut, maka segera lakukan change network secara manual / update location network dengan cara masuk ke menu Options – Mobile Network – Network Selection Mode – Change from Automatic ke Manual – Scan Available for Network – Pilih Roaming Partner Operator Anda – Save.

2. Matikan layanan pada saat yg tidak tepat (tidur, mandi, makan malam, meeting, etc) dengan masuk ke menu Options – Mobile Network – Data Service change from On to Off atau Off When Roaming, atau bisa juga dari Manage Connections -Mobile Network Options – Data Services set ke : Off When Roaming. Sebagai informasi dengan mematikan layanan data service kita tetap dapat menerima Call, SMS dan MMS.

3. Jika anda pengguna layanan BlackBerry Internet Service (BIS) dan anda ingin layanan data tetap aktif sementara email account yg dipush ke handheld lebih dari 1 bahkan sampai 10 email account (apalagi jika email account tersebut tergabung dalam mailing list seperti yahoogroups), maka untuk sementara email2 yg kurang penting sebaiknya di nonaktifkan dengan cara login di blackberry webclient [operator_anda].blackberry.com pada menu email account lakukan delete email tersebut, lakukan add email account ketika kembali di Indonesia.

4. Non aktifkan semua layanan instant messaging terutama FaceBook. aktifkan layanan tersebut pada saat dibutuhkan.

5. Aktifkan koneksi WiFi ketika anda berada di area Free WiFi, tentunya fasilitas ini dapat dinikmati pada handheld yg ada feature Wifi seperti 8320, 8810, 8820, 9000, 8900, 8220 etc. Caranya Manage Connections – Setup Wifi – ikuti step2 berikutnya.

Source: Indosat Mobile

Posted on February 12th, 2010 by Denie
Filed under: Blackberry, tips | No Comments »

Facebook symbols are not part of facebook but can be inserted into your facebook name, chat window, messages, status, comments etc..

♪ = Musical note
♫ = Big musical note
♥ = Black heart
☺= Smile face
☻ = Black smile face Read more…

Posted on January 29th, 2010 by Denie
Filed under: Facebook, Internet, tips | No Comments »

First, Squid server installed (use up2date squid) and configured by adding following directives to file:
# vi /etc/squid/squid.conf

Read more…

Posted on December 18th, 2009 by Denie
Filed under: BASH, Linux, Tutorials | No Comments »

Most of them involve changing the daemon’s configuration in /etc/sendmail.mc and rebuilding sendmail.cf

Specific things that can affect performance:

dnl # Sendmail, Chap 24.9.13, Page 955
dnl # Disable re-write of queue control file (will result in duplicates
dnl #   if the daemon is interrupted during a delivery)
define(`confCHECKPOINTINTERVAL’,`0′)dnl Read more…

Posted on December 9th, 2009 by Denie
Filed under: Linux, Sendmail, tips | No Comments »

If you would like to have a set of web pages that are protected, requiring a username/password to gain access, this tutorial will show you how to set it up. This is geared towards the Unix Apache httpd servers used on holly, lamar, and www.colostate.edu. If you are using another web server, you’ll need to check that server’s documentation to see how to do this.

Read more…

Posted on November 24th, 2009 by Denie
Filed under: Apache, BASH, Linux, Tutorials | No Comments »

The word “catastrophic success” holds a lot of meaning here. It means an unusual surge in traffic that can bring a website to a complete halt. You have been successful at bringing traffic to your website but it proved to be catastrophic.

Read more…

Posted on November 18th, 2009 by Denie
Filed under: Internet, tips | No Comments »

1. Advertise on the internet!

There is an ocean of opportunities through internet marketing, find what works for you.

- Pay Per Click advertising (Download and read the previous document in this section “What are pay per click search engines” ) is very popular and is becoming easier to use everyday. Here are the top 2 Pay Per Click Pages that you can use to advertise your web page.

Make sure to set a budget limit so that you don’t spend more then you can afford.

Read more…

Posted on November 17th, 2009 by Denie
Filed under: Internet, Marketing | No Comments »

If you’re going to be doing a lot of Geotargeting or IP Address Lookups, please take a feed instead which will preserve both our bandwidth and your bandwidth.

Simple GET

That said, there is an easy HTTP oriented API to locate IP addresses and Geocode them. If you don’t supply the “?ip=aa.bb.cc.dd” bit, then the ip address lookup of the calling machine will be located instead (here, the aa,bb,cc,dd are decimal digits). If you add &position=true to the end of the URL then latitude and longitude will be returned also. Both HTML and XML formats are supplied for your convenience.

http://api.hostip.info/country.php
US

http://api.hostip.info/get_html.php?ip=12.215.42.19
Country: UNITED STATES (US)
City: Sugar Grove, IL

http://api.hostip.info/get_html.php?ip=12.215.42.19&position=true
Country: UNITED STATES (US)
City: Sugar Grove, IL
Latitude: 41.7696
Longitude: -88.4588

http://api.hostip.info/?ip=12.215.42.19
[use the URL above for an example - XML too long to paste below]

Read more…

Posted on October 22nd, 2009 by Denie
Filed under: BASH, Linux, Scripting, Tutorials | No Comments »