Sending Emails with SMTP
Sunday, June 30, 2019
After setting up an email server, one way to test it, is connecting directly to port 25 (SMTP) and talking
to the server. Unlike in Simple dummy Mail Server for development in this
post, we’ll only use
telnet. Or we could also use netcat, also known
as the “Swiss Army Knife” of network tools.
Hosting your own hidden onion service
Saturday, May 11, 2019
Running your own service in Tor under a Debian
based operating system is easy:
Raspberry Pi and JavaFX
Saturday, April 20, 2019
Oracle provides a java build for ARM, which runs on the raspberry pi. However, this build doesn’t contain
JavaFX like the other java builds for Linux, Windows or MacOS. Luckily, there are prebuild binaries for
JavaFX for ARM, too: Community Builds.
I took the stable build from chriswhocodes.
Spurious ClassNotFound Exception during maven builds
Sunday, January 13, 2019
I first observed this behavior on our build server running Jenkins. We have two build jobs, building
snapshot versions. Project A and B. Project B depends on A. Always dealing with snapshots. Jenkins ran
mvn clean install command. Now, when both jobs were running in parallel on Jenkins, sometimes project
B failed during compilation or running unit tests with weird ClassNotFound exceptions. The missing classes were
from project A, of course.
Alphatronic P2 plays Silent Night
Wednesday, December 26, 2018
This more than 30 years old Triumph-Adler Alphatronic P2 is still working. It can also play music. Here
is a video how it plays the song Silent Night. This song is this year
200 years old.