Category: Linux

dnsbl.njabl.org sunset Jan 01 2019

If you run a mail server (which I think everyone one should for a real decentralized communication network e-mail was originally designed for) and using postfix  and use dnsbl.njabl.org to lookup blacklisted hosts when processing mail, then you need to remove this host as dnsbl.njabl.org has been sunset and will no longer resolve. This will affect your mail server as it will reject all mail received. Update your postfix configuration file /etc/postfix/main.cf and remove this RBL client entry e.g:

smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org, reject_rbl_client blackholes.easynet.nl, reject_rbl_client dnsbl.njabl.org

Then restart your postfix server

/etc/init.d/postfix restart

Refer: https://en.wikipedia.org/wiki/Not_Just_Another_Bogus_List

 

Personal Email on your terms!

Start the new year with personal email on your terms. Amy can do it, so can you – It is easy – Get this general purpose personal server, get yourself a domain name, host your domain free at http://www.dnsexit.com/ and configure your mail server on your personal server in the privacy of your own home in just 4 clicks:

You know you are a cool techie, but..

You know you are a cool techie, but you still use that free e-mail and that free drop box like services even when you know there is nothing free in life. You worry about losing control of your personal conversations in the e-mail which can surface one day and may haunt you or worry about the security breaches targeted at file storage services that may expose your confidential documents. You know you can leverage your intimate IT knowledge to take control of your data better but don’t have the time to. Now there is a solution. Check out how easy it is to get a personal server up and running. You can start with a free evaluation using the Patriot PS Personal Server Virtual Appliance and just check things out. You may decide to bring life back to your old abandoned desktop PC that you no longer use and turn it into a personal server with single click installable  Patriot PS Personal Server ISO image or even go with the all in one Patriot PS Personal Server System – that is not only small, compact, but fan less too  for that quite 24×7 operation that you need from a personal server.

Show off your techie instincts without sweating it out, play the internet on your terms knowing a personal server is there to serve you when you need it at home or away from home. Get ready for Internet of Things (IOT) without sending your thing data out to remote servers for those prying marketers.

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Your Server, Your Data, Your Terms! ®

Leverage Putty, X-Deep/2 X-Server and XFCE4 for minimalistic X window experience on Linux Servers

This X-Deep/32 X-Server FAQ talks about how you can leverage free Putty tool and minimalistic X Window package XFCE4 that you can install on Linux Servers such as Ubuntu Server  etc, without overloading you Linux Servers running in a headless environment.  Use with cost effective Pexus X-Deep/32 X-Server solution to access Linux servers securely for common administration tasks right from your Windows desktop. With X-Deep/32 you can start multiple sessions each with it’s own instance of X-Server.

Registering your Suse Linux Enterprise

If you are using Suse Linux Enterprise distribution, it is important you get your updates and patches from Novell to maintain your support and authenticity of your distribution.

Each distribution has it’s own quirks and if you have worked with a different distribution such as Red Hat, CentOS or Ubuntu, it takes a while to get around and be familiar with the updates, patches, repositories etc.

Novell has 3 distributions that may be useful for enterprise customers. Novel SLE JEOS (Suse Enterprise Linux Just Enough OS – slimmed down OS), Novell Suse Linux Enterprise (SLE) Server/Desktop and Novell Suse Linux Enterprise for VMware.

There is a new tool called  zypper that lets you register and manage your updates and patch levels.

To register your product (applies to Novell Business Partners). you will have to get an activiation code.  Login to your Novell site and based on your entitlements, you can obtain the registration code. Use the following command to register your SLE and refresh your zypper environment.

suse_register -a email=your_email -a regcode-sles=your_registration_code

zypper refresh

After registration list the update repositories that are added to your zypper environment.

zypper lr


For more information refer:

http://support.novell.com/techcenter/articles/RegandUpdate_SLE10.html

http://www.novell.com/documentation/sle_jeos10/pdfdoc/sles_10_jeos_guide/sles_10_jeos_guide.pdf

 

 

Configuring Suse Linux Networking manually

Networking is the first thing you would do after installation of a Linux OS (for that matter any system OS). If you are dealing with a server, chances are you don’t have a GUI at hand. Most Linux distributions have different utilities to handle network configuration.  Here are links to Novell Suse Enterprise Linux documentation.

All  Novell Docs -> http://www.novell.com/documentation/index.html

SLE11 Network Configuration Link -> http://www.novell.com/documentation/sles11/book_sle_admin/data/sec_basicnet_manconf.html