Ralf Hildebrandt Ralf.Hildebrandt@computerbeschimpfung.de Charité Campus Benjamin Franklin Berlin Tel: (0)162 239 78 52 or Tel: (0)30 450 570 155 or Tel: (0)7000 POSTFIX (kostenpflichtig; 0,124 Euro / Minute aus dem Festnetz der Deutschen Telekom)

Watch my Stirling engine at work

• mp4 video (boring)

Some facts about me...

• postmaster@python.org

• Spezialist für Computerbeschimpfung

• How to send email to me

• Winner of the Software Engineering Award 2001 of the Ernst Denert-Stiftung für Software-Engineering

• Dipl.-Inform. -- Alumnus of Computer Science at the Technical University of Braunschweig.

• formerly at the University of Passau / Chair for Computer Systems
  

  TIM-STRUPPI

  Test Input Minimization -
  Systematic Testing by Re-Using Partitioned Program Input I transferred differential debugging to input data - I tried to find the (near) minimum failure-inducing subset of input data.
  My prototype's results: Inputs of up to 1,000,000 bytes in size can be automatically minimized to about 1-40 bytes without changing the nature of the error.
  I've already minimized failure-inducing input for the following programs:
  • Solaris 2.6: flex, ul, units, col, nroff, troff, crtplot and Netscape Navigator 4.7
  • Linux: mozilla-m13, bc and gcc-2.95.2
  You can try it out for yourself, just try the Eclipse plugins.

• ehemaliger Leiter der THW-Höhenrettungsgruppe

• former bastard operator from hell at Institute for steel structures at the University of Braunschweig
  
• former bastard operator from hell at Passau

• formerly working at innominate.com

• now working for T-Systems Business Services GmbH as a "Manager Technik" at charite.de

• one of the German Postfix gurus

Publications

• de.postfix.org - German Postfix Website
  
• Postfix - Einrichtung, Betrieb und Wartung (2. aktualisierte und erweiterte Auflage) (Übersetzung der Englischen Ausgabe "The Book of Postfix").
  Kaufen bei: < Amazon (de) >
  
• The Book of Postfix
  Buy it from: < amazon.com| BN.com| bookpool.com| O'Reilly >
  Check the combined sales-rank here.
  Check the US sales-rank here.
  Check the DE sales-rank here.
  Check the webpage here.
• Die Post ist da
  Grundlagen der Sendmail-Konfiguration (c't 9/99, Seite 210)
• snort und nmap -- zwei Seiten derselben Münze (Linux Magazin 12/2000, Seite 102)
• Minimizing Failure-Inducing Input
  Given some test case, a program fails. Which part of the test case is responsible for the particular failure? We show how our test case minimization algorithm generalizes and simplifies some failing input to a minimal test case that produces the failure.
  Appeared in Proc. ACM SIGSOFT International Symposium on Software Testing and Analysis (ISSTA 2000), Portland, Oregon, August 2000 (slides)
• Mandelbrot Explorer written in JavaScript, submitted to the the 5k excellence award
• Postfix als sicheres SMTP Gateway -- 14. DNUG Jahrestagung 2001 Potsdam (slides)
• Personal Firewalls -- Ein Überblick -- CAST Praxistag 2002 (slides)
• Spam -- Was kann man als Einrichtung im DFN dagegen tun? -- DFN Betriebstagung 2002 (slides)
• Proofreader for Das Postfix Buch. Sichere Mailserver mit Linux
  
• Proofreader for Die Profilösung - Der eigene Mail-Server mit Linux (c't 20/2002, Seite 130)
  
• Co-author of Tod dem Spam - SpamAssassin filtert auf dem Server (c't 22/02, Seite 168)
  
• Co-author of Courier-IMAP -- Schneller und sicherer Mailzugriff für mobile User (c't 16/03)
  
• Postfix for spamprotection -- Linuxforum 2004 (slides)
  • pictures
• maps & policy delegation -- Linuxforum 2005 (slides)
• maps und policy Delegierung -- Mailserverkonferenz Magdeburg 2005 (slides)
  
  • pictures
• Nemesis - Schlund+Partner entwickelt sein eigenes Mailsystem (Linux-Magazin, 08/05)
  
• Postfix: Status Quo -- current development -- an overview -- Linuxforum 2006 (slides)
• Aktuelle Entwicklungstrends bei Postfix, Antispam-Maßnahmen durch policy-Delegation -- GUUG Frühjahrsgespräch 2006 (slides)
• Workshop: Integration von Postfix und externen Programmen -- GUUG Frühjahrsgespräch 2006 (abstract)
• 44 Servergebote -- Linux-Magazin, 12/06 (toc)
• Reviewer for Pluggable Authentication Modules: The Definitive Guide to PAM for Linux SysAdmins and C Developers
• Konferenz für die Admin-Praxis -- Linux-Magazin, 02/07 (toc)
• Deathmatch -- Linuxforum 2007, Copenhagen (slides)
  
• Änderungen von Postfix 1.1 bis 2.4 (slides)
  
• Multiple Postfix Instanzen -- 3. Mailserver-Konferenz 2007, Berlin (slides)
• Migration von courier zu dovecot im harten Praxiseinsatz -- 3. Mailserver-Konferenz 2007, Berlin (slides | audio download )
• LISA '07 -- Patrick and I were there:
  • (T4) Postfix Configuration and Administration
  • (W3) Postfix Anti-Spam Workshop
  • (W6) Cyrus SASL Authentication Workshop
• Sysadmins in Dallas
• Postfix einrichten und absichern -- Linux-Magazin Sonderheft "Profi-Server" 01/08
• ClamAV gegen Viren und Spam -- Linux-Magazin Technical Review 07/2008
• Controlling mail message flow by content analysis -- Open Source Days, Copenhagen 10/2008 (slides)

Some facts about you...

Make a wish

Arschkrebs

You know this, don't you: You're at a party, and once the guests notice that you're a doctor, they start talking about their illnesses and want your diagnosis.
For free.
A friend of mine was so annoyed by this that his party-diagnosis is always "Arschkrebs -- you should see a Doctor".

• Arschkrebs in mundmische.de
• Arschkrebs in der Kamelopedia

Creativity

Creativity is the absence of fear.

Unix Stuff

• chroot'ing bind-8.x and bind-9.x on HP-UX 10.x
  Explanation on how to chroot the nameserver on HP-UX.
• Postfix
  
• Patches to implement the UI portion of sync_members for mailman
• openvpngraph uses rrdtool to graph the number of users logged in, login failures, multiple logins of the same person and the combined bandwidth usage of all users

Real world stuff

• Private Straßenbeleuchtung in Berlin
  

Thank you!

Sometimes, deliveries don't arrive.

If I don't say "Thank you!" (or send you a postcard), then it's not because I'm rude or unthankful, but because the delivery never made it here! So check with me and e.g. Amazon to see if the delivery actually reached me.

• Martin Freiss
• Udo Wolter
• Fridtjof Busse
• Ingo Reich
• prosozial.de
• Lukas Ruf
• Patrick Ben Koetter
• Marc Logemann
• Brian Collins
• Peter Kelly
• Jan Theofel
• Bruce Platt
• Bruce Pea
• Marc Briceno
• Zoid Technologies, LLC.
• Wolfram Henkel
• blist.com (Kevin Merritt)
• Peter T Bosse II
• Kim Emax
• Luft Engineering GmbH
• Jonathan Jacobs
• Mauricio Brixner
• Andreas Peikert
• Alexander Schories
• Tom Luther
• Gary MacKay
• Uwe Jeworowski
• Derek Bolander
• Daniel Stellwagen
• Konrad Mathieu
• Jim Knuth
• Rodney Morgan
• Ralf Keyser

At the moment I'm reading

• Lost in a good book by Jesper Fforde

Recently read books

• The Well of Lost Plots by Jesper Fforde
• Lost in a Good Book by Jesper Fforde
• "Entschuldigung, sind Sie die Wurst?": Deutschland im O-Ton - Das Beste von belauscht.de by Felix Anschütz et. al.
• Macho Man by Moritz Netenjakob
• The Eyre Affair by Jesper Fforde
• The Miocene Arrow by Sean McMullen
• Like the Flowing River by Paulo Coelho
• The Alchemist by Paulo Coelho
• American Gods by Neil Gaiman
• Practical Demonkeeping by Cristopher Moore
• Making Money by Terry Pratchett
• Shakespeare: The World as a Stage by Bill Bryson