Hans Salvisberg's blog

Linux workstation security checklist

Link collection:

Broken Windows Theory -- Microsoft’s Windows 10 is a privacy nightmare. Here’s how to protect yourself.
The Windows 10 Security Settings You Need to Know

Datenschutz in Windows 10 verbessern

This is an update to my original instructions for installing qpsmtpd on a Linux system running under Plesk.

Just in case you don't have cc yet:

apt-get install build-essential


qpsmtpd is now on GitHub

qpsmtpd's README mentions installing the following "required Perl modules"

perl -MCPAN -e 'install Net::DNS'
perl -MCPAN -e 'install MIME::Base64'

The process is not straight-forward, but it's possible using the Anything to SMS (CSV, XML, SQL) Android App. The problem is that you tend to get the

Failed java.lang.Exception: No SMS imported.

message.

To successfully import into a Samsung Galaxy S4, I used the following procedure:

1. Use Nokia Suite to export the messages into a .csv file. You will get (at least on Windows) a UTF-8 file without BOM and with Windows-style line endings (CR/LF).

Run


aptitude purge mailman psa-mailman-configurator


Run


mysql -uadmin -p`cat /etc/psa/.psa.shadow ` database_name


I found that Google/Gmail was suddenly filing email from my domains into the spam folder of the recipients. At that point I had implemented SPF a few years back. It's difficult to access whether SPF pass increases the chances for successful delivery, but SPF fails definitely increase the odds of rejections, which is a good thing, because it makes my domains unattractive for spoofing. This in turn has reduced the number of non-delivery messages (back-scatter) for spam that claimed to originate from one of my domains to just about none.

Here's what 111.93.188.66 (presumably Parallels, India) did:

cat /etc/issue
/usr/local/psa/bin/admin --show-password
mysql -uadmin -p`cat /etc/psa/.psa.shadow ` psa

\q
use psa;
select id,name from domains where cl_id = vendor_id;
select id,login from clients where parent_id is null;
update domains set vendor_id=1 where cl_id=vendor_id;

I run some German-language sites, but I strongly prefer working with an English-language user interface. A possible solution is the Administration Language module, which lets you select an alternative langauge for the administration pages, but it falls short in several ways:

• I want to see everything in English, not just the administration pages,
• I have a deputy administrator who prefers to see the administrtion pages in German, and

For a while now I've been getting a Chinese piece of spam every day, supposedly sent by people like 魏碈, which is encoded as

From: =?utf-8?B?6a2P56KI?=

These pages have helped make sense of this:
BASE64 Decode and Encode
Wikipedia: Base64
UTF-8 encoding table and Unicode characters
RFC 2044 (UTF-8)