Archive for July 12th, 2012

Richard stallman (father of free software) interview – Stallman: Google+ and Facebook mistreat their users

Thursday, July 12th, 2012

father-and-Founder-of-Free-Software-Foundation

The father of free software, mr. Richard Stallman is notorious for his critical mind and software freedom activism quite well.

While checking some of his speaches and interviews, I came across another interesting, one here RMS critices and exposes the bad and evilness of fb and Google+.

Interview with Richard Stallman – Stallman: Facebook and Google+ Mistreat Their Users

 

People unaware of computer networks, programming, Unix and the deep computing so to say definitely didn't understand the profoundness of upcoming problems of so called "social networks". The Facebook and Google+ Mistreat Their Users video is also to be found in youtube under name Richard Stallman: Facebook IS Mass Surveillance .

Its a pity Stallman is mostly popular only among specific users like me which are already 'dubbed' into free software and have a belief that computer software should be free. Hopefully as time passes more and more people will be awakened to listen to his speeches and realize the severeness of problems, we face nowdays by simply accepting almost anything new without much privacy concerns …
If you're a free software enthusiast like me, please take the time to share the video and whistle-blow about the problem to as many non-tech pc users as possible 🙂

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Posted in Curious Facts, Everyday Life, News | No Comments »

How to disable spammer domain in QMAIL mail server with badmailto variable

Thursday, July 12th, 2012

I've recently noticed one of the qmail SMTP servers I adminster had plenty of logged spammer emails originating from yahoo.com.tw destined to reache some random looking like emails (probably unexisting) again to *@yahoo.com.tw

The spam that is tried by the spammer is probably a bounce spam, since it seems there is no web-form or anything wrong with the qmail server that might be causing the spam troubles.
As a result some of the emails from the well configured qmail (holding SPF checks), having a correct existing MX, PTR record and even having configured Domain Keys (DKIM) started being marked, whether emails are sent to *@yahoo.com legit emails.

To deal with the shits, since we don't have any Taiwanese (tw) clients, I dediced to completely prohibit any emails destined to be sent via the mail server to *@yahoo.com.tw. This is done via /var/qmail/control/badmailto qmail control variable;

Here is content of /var/qmail/control/badmailto after banning outgoing emails to yahoo.com.tw;;;

qmail:~# cat /var/qmail/control/badmailto
[!%#:\*\^]
[\(\)]
[\{\}]
@.*@
*@yahoo.com.tw

The first 4 lines are default rules, which are solving a lot of badmailto common sent emails. Thanks God after a qmail restart:

qmail:~# qmailct restart
....

Checking in /var/log/qmail-sent/current, there are no more outgoing *@yahoo.com.tw destined emails. Problem solved …

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Posted in Qmail, System Administration | 1 Comment »