Download your favorite Linux distribution at LQ ISO.
Go Back > Blogs
User Name



Email Filter With Procmail: Filter Received-Headers By IP-Range

Posted 07-12-2021 at 03:02 PM by Michael Uplawski
Updated 10-14-2023 at 12:12 AM by Michael Uplawski (Why not)

A styled version of this text in French:
EDIT (14/10/2023): Hint: go in favor of server-side filters
EDIT (27/09/2021): write positive test results to the procmail log-file

I have not found much insight on the Web about the feasibility of an idea that I have had many years ago, but then had forgotten for a while:
Filter email by Received-header, if the IP-address in
Senior Member
Views 1112 Comments 0 Michael Uplawski is offline

False statement

Posted 03-23-2021 at 12:57 AM by Michael Uplawski
Updated 12-06-2021 at 07:14 AM by Michael Uplawski

I just modified my comment to one of my own blog-entries but now feel that it is itself worth an entry.

If it sticks it may be sticky. Avoid.
This comment contained a false statement. I have to leave it here and mark it as false, because it is frequently repeated in a pseudo-scientific context, by right-wing political activists, by marketing-experts, by so-called “coaches”.

The story is that, around 1955, an American scientific formulated a hypothesis which was
Senior Member
Views 951 Comments 4 Michael Uplawski is offline

Handwritten Web-Pages

Posted 02-13-2021 at 05:28 AM by Michael Uplawski
Updated 01-05-2024 at 03:20 AM by Michael Uplawski (Updates and a comprehensive Howto in English (manuscript))

update 2024-01-05, new URL:
Manuscript: A Howto for the transformation of handwritten text to Hypertext in Inkscape

I have a dream...

My hand-writing suffers from not doing any. For some years already I try to compensate by forcing me to use a fountain pen, whenever possible. I even try to find new occasions to use it. The fountain pen obliges me to concentrate and to obey. My texts are more readable, since, but the process is too slow and cumbersome....
Senior Member
Views 626 Comments 2 Michael Uplawski is offline

Validate OOXML

Posted 12-11-2020 at 10:27 AM by Michael Uplawski
Updated 12-15-2020 at 12:05 AM by Michael Uplawski (moved one paragraph, cosmetics, threads linked.)

Validate OOXML

Ensure the standard-conformance of OOXML-documents created from scratch.
See also the two Threads concerning this topic: A styled version of this document:
Senior Member
Views 575 Comments 0 Michael Uplawski is offline

[HTML/CSS] Web-Fonts - Don’t let “them” get you

Posted 02-25-2020 at 01:56 PM by Michael Uplawski
Updated 02-13-2022 at 10:43 AM by Michael Uplawski (13/02/2022 url of the handwritten version updated)

Thread: ttf works, why should I use woff?
A styled version of this document:
A hand-written version of this document:

One of my bosses once said that, when things start to become complicated, it means that an error has been committed.

Where programming is concerned, I usually arrive to back-trace my actions...
Attached Images
File Type: png Linux-Biolinum-sample.png (25.4 KB, 35 views)
Senior Member
Views 140 Comments 0 Michael Uplawski is offline


All times are GMT -5. The time now is 05:25 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration