Sunday, October 9, 2016
When you send email from your server, your email can be recognised by client name as un-secure/un-trustable if you use a third party provided domain name.
This is pretty normal, as any body can send email with the form they likes and it will be delivered.
For exemple I can send email in the form "firstname.lastname@example.org", but most email Client while detect this email as suspicious due to the fact my IP sending the email may not have the right on the domain "ubuntu.com".
To evaluate emails rights, Client will ask the domain name owner if IP sending the email is allowed to use this email name, this information is contained in TXT records of a DNS as SPF value.
Thursday, May 26, 2016
To keep your Linux up to date with your local time, you should use ntpd(Network Time Protocol deamon):
1- first specify your timezone to your system(dig /usr/share/zoneinfo to find your own):
ln -s /usr/share/zoneinfo/Europe/Paris /etc/localtime
2 - Install Network Time Protocol daemon:
apt-get install ntp
3 - Sync time(Give it a public time server):
sudo service ntp stop sudo ntpdate -s 0.fr.pool.ntp.org sudo service ntp start
Monday, July 8, 2013
The PGP standard (stand for Pretty Good Privacy) have an open source suite implementation: GPG (GnuPG). This is quite simple to use if you want to ensure that only the person you want can read your message, and on the other side be sure that you can trust message incoming.
This post is a short one to summarize what is a PGP keys pair, what's the point with it, and how to use it thanks to GnuPG.
Sunday, June 9, 2013
I will describe step by step how to do that and also configuring the whole system to get for future: netconsole uboot debug, install a debian rescuer on flash, make a backup of your whole system, get DHCP working,
Sunday, April 14, 2013
Saturday, March 9, 2013
Three years ago I bought a mail notifier from Dealextreme. This USB device is only equipped with and RGB LED and is implementing HID protocol and so do not need any drivers to control.
When received I wanted to only poll my Gmail account each x minutes and according to the colors display my unread email, that worked very nicely until I got a smartphone...
So I unplugged the mail notifier for a long time, in fact until now..
As I am trainning in python, I decided to make a kind of package to handle this device, by creating a library that could be used in your python scripts or as a stand alone binary