@book{brooks95,
	author    = "Brooks, Jr., Frederick P.",
	title     = "\textit{The mythical man-month: essays on software engineering}",
	year      = "1995",
	publisher = "Addison-Wesley",
}

@book{kernighan84,
	author =  "Brian W. Kernighan and Rob Pike",
	title = "\textit{The UNIX Programming Environment}",
	year = "1984",
	publisher = "Prentice-Hall",
	note = "ISBN: 0-13-937681-X",
}

@book{rochkind85,
	author = "Marc J. Rochkind",
	title = "\textit{Advanced UNIX Programming}",
	year = "1985",
	publisher = "Prentice-Hall",
	note = "ISBN: 0-13-011800-1",
}

@book{kernighan99,
	author = "Brian W. Kernighan and Rob Pike",
	title = "\textit{The Practice of Programming}",
	year = "1999",
	publisher = "Addison-Wesley",
	note = "ISBN: 0-201-61586-X",
}

@book{k&r,
	author = "Brian W. Kernighan and Dennis M. Ritchie",
	title = "\textit{The C Programming Language}",
	edition = "Second",
	year = "1988",
	publisher = "Prentice-Hall",
	note = "ISBN: 0-13-110362-8",
}

@book{raymond99,
	author = "Eric S. Raymond",
	title = "\textit{The Cathedral \& the Bazaar}",
	year = "1999",
	publisher = "O'Reilly Media",
	note = "ISBN: 1-56592-724-9. Also available online at {\small\url{http://catb.org/esr/writings/cathedral-bazaar/cathedral-bazaar/} (2008-10-14)}",
}

@book{raymond03,
	author = "Eric~S.\ Raymond",
	title = "\textit{The Art of UNIX Programming}",
	year = "2003",
	publisher = "Addison-Wesley Professional",
	note = "ISBN: 0-13-142901-9. Also available online at {\small\url{http://catb.org/esr/writings/taoup/html/} (2008-12-30)}",
}

@book{costales97,
	author = "Bryan Costales and Eric Allman",
	title = "\textit{sendmail}",
	year = "1997",
	edition = "Second",
	publisher = "O'Reilly \& Associates, Inc",
	note = "ISBN: 1-56592-222-0",
}

@book{vixie01,
	author = "Paul A. Vixie and Frederick M. Avolio",
	title = "\textit{Sendmail: Theory and Practice}",
	year = "2001",
	edition = "Second",
	publisher = "Digital Press",
	note = "ISBN: 1-55558-229-X. The first chapter ``Background and History'' is available online at {\small\url{http://smtap.al.org/ch01.pdf} (2008-10-23)}",
}


@book{powerof2x2,
	author = "Alex Lowy and Phil Hood",
	title = "\textit{The Power of the 2 x 2 Matrix: Using 2 x 2 Thinking to Solve Business Problems and Make Better Decisions}",
	publisher = "Jossey-Bass",
	year = "2004",
	note = "ISBN: 0-78797-292-4",
	pages = "129--131",
}

@article{wired:hype,
	author = "Jesse Freund",
	title = "\textit{Hype List}",
	journal = "Wired Magazine",
	month = "June",
	year = "1998",
	note = "Also available online at: {\small\url{http://www.wired.com/wired/archive/6.06/hypelist.html} (2008-11-26)}",
}

@techreport{panda:email-threats,
	key = "Panda",
	institution = "Panda Security and Commtouch",
	author = "",
	title = "\textit{Q2 2008 Email Threats Trend Report}",
	note = "Also available online at: {\small\url{http://www.pandasecurity.com/emailhtml/oxygen/Q2_08%20Email_Threats%20-%20Panda.pdf} (2008-11-26)}",
	year = "2008",
	month = "July",
}

@techreport{ironport:zombie-computers,
	key = "Ironport",
	institution = "{IronPort Systems Inc.}",
	type = "Press Release",
	author = "",
	title = "\textit{Spammers Continue Innovation: IronPort Study Shows Image-based Spam, Hit \& Run, and Increased Volumes Latest Threat to Your Inbox}",
	month = "June",
	year = "2006",
	note = "Also available online at: {\small\url{http://ironport.com/company/ironport_pr_2006-06-28.html} (2008-11-26)}",
}


@incollection{lenke95,
	author = "Nils Lenke and Peter Schmitz",
	title = "\textit{Geschw{\"a}tz im `Globalen Dorf' -- Kommunikation im Internet}",
	booktitle = "Osnabr{\"u}cker Beitr{\"a}ge zur Sprachtheorie: Neue Medien",
	publisher = "Ulrich Schmitz",
	volume = "50",
	year = "1995",
	pages = "117--141",
	note = "(In German language)",
}

@mastersthesis{hafiz05,
	author = "Munawar Hafiz",
	title = "\textit{Security architecture of mail transfer agents}",
	school = "University of Illinois",
	year = "2005",
	month = "June",
	note = "Also available online at: {\small\url{http://netfiles.uiuc.edu/mhafiz/www/research/mastersthesis/thesis.pdf} (2009-02-03)}",
}


@article{shearer06,
	author = "Dan Shearer",
	title = "\textit{MTA Comparison}",
	journal = "Linux Weekly News",
	month = "August",
	year = "2006",
	note = "Available online at: {\small\url{http://shearer.org/MTA_Comparison} (2008-12-09)} or {\small\url{http://lwn.net/Articles/196711} (2008-12-09)}",
}


@book{gancarz95,
	author = "Mike Gancarz",
	title = "\textit{The UNIX Philosophy}",
	year = "1995",
	publisher = "Digital Press",
	note = "ISBN: 1-55558-123-4",
}


@misc{lifewithqmail,
	author = "Dave Sill",
	title = "\textit{Life with qmail}",
	year = "2007",
	howpublished = "On the Internet: {\small\url{http://lifewithqmail.org} (2008-10-18)}",
	note = "Version 2007-11-30",
}

@misc{jdebp,
	author = "Jonathan de Boyne Pollard",
	title = "\textit{Unix Mail Transport Systems reviewed by JdeBP}",
	year = "1998--2004",
	howpublished = "On the Internet: {\small\url{http://homepages.tesco.net/~J.deBoynePollard/Reviews/UnixMTSes/} (2008-10-18)}",
}

@misc{email:griffiths,
	author = "Richard T. Griffiths",
	title = "\textit{History of the Internet, Internet for Historians (and just about everyone else)}",
	chapter = "3",
	year = "FIXME",
	howpublished = "On the Internet: {\small\url{http://www.let.leidenuniv.nl/history/ivh/chap3.htm} (2008-10-23)}",
}

@misc{email:crocker,
	author = "Dave Crocker",
	title = "\textit{Email History, How Email Was Invented}",
	year = "FIXME",
	howpublished = "On the Internet: {\small\url{http://www.livinginternet.com/e/ei.htm} (2008-10-23)}",
}

@misc{email:vleck,
	author = "Tom van Vleck",
	title = "\textit{The History of Electronic Mail}",
	year = "FIXME",
	howpublished = "On the Internet: {\small\url{http://www.multicians.org/thvv/mail-history.html} (2008-10-23)}",
}

@misc{email:akkad,
	author = "Jay Akkad",
	title = "\textit{The History of Email}",
	year = "FIXME",
	howpublished = "On the Internet: {\small\url{http://www.cs.ucsb.edu/~almeroth/classes/F04.176A/homework1_good_papers/jay-akkad.html} (2008-10-23)}",
}

@misc{email:murakami,
	author = "Gary J. Murakami",
	title = "\textit{The History of ihnp4 and The Growth of the Email Network}",
	year = "FIXME",
	howpublished = "On the Internet: {\small\url{http://www.nobell.org/~gjm/about/ihnp4.html} (2008-10-23)}",
}

@misc{email:tomlinson,
	author = "Ray Tomlinson",
	title = "\textit{The First Network Email}",
	year = "FIXME",
	howpublished = "On the Internet: {\small\url{http://openmap.bbn.com/~tomlinso/ray/firstemailframe.html} (2008-10-23)}",
}

@misc{osterman08,
	author = "Michael Osterman",
	title = "\textit{How do you define `unified communications'?}",
	month = "February",
	year = "2008",
	howpublished = "On the Internet: {\small\url{http://www.networkworld.com/newsletters/gwm/2008/0225msg1.html} (2008-11-26)}",
}

@misc{plug:mtas,
	author = "Rick Moen and Ted Cabeen and Bastian Blank and Sean Burlington and Simon Cooper and J. C. Lawrence",
	title = "Subject: \textit{email server question...}",
	year = "2002--2003",
	howpublished = "This is a discussion on the mailing list \textit{plug@lists.q-linux.com}",
	note = "Available on the Internet: {\small\url{http://linuxmafia.com/faq/Mail/mtas.html} (2008-12-09)}",
}


@article{simpson07,
	author = "Ken Simpson and Stas Bekman",
	title = "\textit{Fingerprinting the World's Mail Servers}",
	year = "2007",
	month = "May",
	journal = "O'ReillyNet",
	note = "On the Internet: {\small\url{http://oreillynet.com/lpt/a/6849} (2008-12-11)}",
}

@misc{bernstein01,
	author = "Daniel~J. Bernstein",
	title = "\textit{Internet host SMTP server survey}",
	year = "2001",
	month = "October",
	howpublished = "A posting to the news group comp.mail.misc",
	note = "Available on the Internet: {\small\url{http://cr.yp.to/surveys/smtpsoftware6.txt} (2008-12-11)}",
}


@misc{venema:postfix-growth,
	author = "Wietse Venema",
	title = "\textit{The Postfix mail server as a secure programming example}",
	year = "2006",
	howpublished = "On the Internet: {\small\url{http://www.eurecom.fr/teaching/engineering/page40379/file40059.pdf} (2008-12-11)}",
}


@book{dent04,
	author = "Kyle D. Dent",
	title = "\textit{Postfix: The Definitive Guide}",
	year = "2004",
	publisher = "O'Reilly Media",
	note = "ISBN: 0-596-00212-2",
}

@book{graff03,
	author = "Mark G. Graff and Kenneth R. van Wyk",
	title = "\textit{Secure Coding: Principles and Practices}",
	year = "2003",
	publisher = "O'Reilly Media",
	note = "ISBN: 0-596-00242-4",
}

@book{eisentraut05,
	author = "Peter Eisentraut and Alexander Wirt",
	title = "\textit{Mit Open Source-Tools Spam und Viren bek{\"a}mpfen}",
	year = "2005",
	publisher = "O'Reilly Verlag",
	note = "ISBN: 3-89721-377-X. (In German language)",
}

@book{heinlein02,
	author = "Peer Heinlein",
	title = "\textit{Das Postfix-Buch: sichere Mailserver mit Linux}",
	year = "2002",
	publisher = "SuSE-Press",
	note = "ISBN: 3-935922-41-8. (In German language)",
}

@book{hildebrandt08,
	author = "Ralf Hildebrandt and Patrick Ben Koetter",
	title = "\textit{Postfix: Einrichtung, Betrieb und Wartung}",
	year = "2008",
	publisher = "dpunkt.verlag",
	note = "ISBN: 3-89864-518-8. (In German language)",
}
@book{hildebrandt0X,
	author = "Ralf Hildebrandt and Patrick Ben Koetter",
	title = "\textit{The Book of Postfix}",
	year = "XX",
	publisher = "No Starch Press",
	note = "ISBN: 1-59327-001-1",
}


@book{spinellis03,
	author = "Diomidis Spinellis",
	title = "\textit{Code Reading: The Open Source Perspective}",
	year = "2003",
	publisher = "Addison-Wesley Professional",
	note = "ISBN: 0-201-79940-5",
}

@book{spinellis06,
	author = "Diomidis Spinellis",
	title = "\textit{Code Quality: The Open Source Perspective}",
	year = "2006",
	publisher = "Addison-Wesley Professional",
	note = "ISBN: 0-321-16607-8",
}

@book{kan03,
	author = "Stephen~H. Kan",
	title = "\textit{Matrics and Models in Software Quality Engineering}",
	year = "2003",
	publisher = "Addison-Wesley",
	edition = "Second",
	note = "ISBN: 0-201-72915-6",
}

@book{sill02,
	author = "Dave Sill",
	title = "\textit{The qmail Handbook}",
	year = "2002",
	publisher = "Apress",
	note = "ISBN: 1-893115-40-2",
}

@inproceedings{candea03,
	author = "George Candea and Armando Fox",
	title = "\textit{Crash-Only Software}",
	booktitle = "Workshop on Hot Topics in Operating Systems",
	volume = "9",
	year = "2003",
	note = "On the Internet: {\small\url{http://dslab.epfl.ch/pubs/crashonly/crashonly.pdf} (2009-02-03)}",
}

@misc{wheeler03,
	author = "David~A.\ Wheeler",
	title = "\textit{Countering Spam with Ham-Authenticated Email and the Guarded Email Protocol}",
	year = "2003",
	howpublished = "On the Internet: {\small\url{http://www.dwheeler.com/guarded-email/guarded-email.html} (2009-01-04)}",
}

@techreport{back02,
	author = "Adam Back",
	title = "\textit{Hashcash -- A Denial of Service Counter-Measure}",
	year = "2002",
	month = "August",
	note = "On the Internet: {\small\url{http://hashcash.org/papers/hashcash.pdf} (2009-01-04)}",
}

@book{hazel01,
	author = "Philip Hazel",
	title = "\textit{Exim: The Mail Transfer Agent}",
	year = "2001",
	publisher = "O'Reilly",
	note = "ISBN: 0-596-00098-7",
}

@misc{cole07,
	author = "William~K.\ Cole",
	title = "\textit{Blacklists, Blocklists, DNSBL's, and survival}",
	year = "2007",
	howpublished = "On the Internet: {\small\url{http://scconsult.com/bill/dnsblhelp.html} (2009-01-10)}",
}

@techreport{levine08,
	author = "John~R.\ Levine",
	title = "\textit{DNS Blacklists and Whitelists draft-irtf-asrg-dnsbl-08}",
	institution = "Anti-Spam Research Group",
	year = "2008",
	month = "November",
	note = "On the Internet: {\small\url{http://tools.ietf.org/html/draft-irtf-asrg-dnsbl-08} (2009-01-10)}",
}

@misc{harris03,
	author = "Evan Harris",
	title = "\textit{The Next Step in the Spam Control War: Greylisting}",
	year = "2003",
	howpublished = "On the Internet: {\small\url{http://projects.puremagic.com/greylisting/whitepaper.html} (2009-01-10)}",
}

@misc{graham02,
	author = "Paul Graham",
	title = "\textit{A Plan for Spam}",
	year = "2002",
	month = "August",
	howpublished = "On the Internet: {\small\url{http://paulgraham.com/spam.html} (2009-01-10)}",
}

@techreport{venema92,
	author = "Wietse Venema",
	title = "\textit{TCP WRAPPER: Network monitoring, access, control, and booby traps.}",
	institution = "Eindhoven University of Technology",
	year = "1992",
	month = "July",
	note = "On the Internet: {\small\url{http://www.vtcif.telstra.com.au/pub/docs/security/tcp_wrapper.txt} (2009-01-10)}",
}

@book{tanenbaum02,
	author =  "Andrew~S.\ Tanenbaum and Maarten van Steen",
	title = "\textit{Distributed Systems: Principles and Paradigms}",
	year = "2002",
	edition = "International",
	publisher = "Prentice-Hall",
	note = "ISBN: 0-13-121786-0",
}

@misc{blanco05,
	author = "Elena Blanco",
	title = "\textit{Open source and the postmaster}",
	publisher = "OSS Watch",
	year = "2005",
	month = "August",
	howpublished = "On the Internet: {\small\url{http://www.oss-watch.ac.uk/resources/postmaster.xml} (2009-01-22)}",
}

@techreport{cabral01,
	author = "Jim Cabral",
	title = "\textit{Securing Email Through Proxies: Smap and Stunnel}",
	institution = "SANS Institute",
	year = "2001",
	month = "July",
	note = "On the Internet: {\small\url{http://www.sans.org/reading_room/whitepapers/email/securing_email_through_proxies_smap_and_stunnel_579} (2009-01-22)}",
}

@misc{sox,
	title = "\textit{Sarbanes-Oxley Act}",
	author = "United States Public Laws",
	year = "2002",
	howpublished = "PL 107-204, 116 Stat 745, 2002 Enacted HR.3763",
	note = "On the Internet: {\small\url{http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=107_cong_bills&docid=f:h3763enr.tst.pdf} (2009-01-26)}",
}


@misc{finch-sendmail,
	author = "Tony Finch",
	title = "\textit{The sendmail command}",
	year = "2006",
	month = "February",
	howpublished = "On the Internet: {\small\url{http://fanf.livejournal.com/50917.html} (2009-01-26)}",
	note = "Part 1 of the series ``\textit{How not to design an MTA}'' which is accessable at: {\small\url{http://dotat.at/writing/mta-arch}}.",
}

@misc{finch-queue,
	author = "Tony Finch",
	title = "\textit{Spool file logistics}",
	year = "2006",
	month = "September",
	howpublished = "On the Internet: {\small\url{http://fanf.livejournal.com/65203.html} (2009-01-26)}",
	note = "Part 5 of the series ``\textit{How not to design an MTA}'' which is accessable at: {\small\url{http://dotat.at/writing/mta-arch}}. His articles ``\textit{More about log-structured queues}'' and ``\textit{More log-structured queues}'' discuss the idea in more detail.",
}


@misc{justman:bugtraq,
	author = "Ian~R. Justman",
	title = "Subject: \textit{setuid vs. setgid}",
	year = "1999",
	month = "January",
	howpublished = "This is a post to the \textit{Bugtraq} mailing list \textit{bugtraq@securityfocus.com}",
	note = "Available on the Internet: {\small\url{http://seclists.org/bugtraq/1999/Jan/0099.html} (2009-01-26)}",
}


@article{mcilroy78,
	author = "Doug McIlroy and others",
	title = "\textit{Unix Time-Sharing System Forward}",
	journal = "The Bell System Technical Journal",
	year = "1978",
	volume = "volume 57, number 6, part 2, page 1902",
}
Doug McIlroy The Bell System Technical Journal. Bell Laboratories. M. D. McIlroy, E. N. Pinson, and B. A. Tague. ``Unix Time-Sharing System Forward''. 1978. 57 (6, part 2). p. 1902.


@misc{fsf:gpl,
	author = "Free Software Foundation, The",
	title = "\textit{The GNU General Public License, version 2}",
	year = "1991",
	note = "Available on the Internet: {\small\url{http://gnu.org/licenses/gpl-2.0.html} (2009-01-31)}",
}

@misc{fsf:freesw-definition,
	author = "Free Software Foundation, The",
	title = "\textit{The Free Software Definition}",
	year = "last updated in December 2008",
	note = "Available on the Internet: {\small\url{http://gnu.org/philosophy/free-sw.html} (2009-01-31)}",
}



@incollection{johnson79,
	author = "Stephen~C. Johnson",
	title = "\textit{YACC: Yet Another Compiler-Compiler}",
	booktitle = "UNIX Programmer's Manual",
	volume = "2",
	year = "1979",
	note = "Available on the Internet: {\small\url{http://dinosaur.compilertools.net/yacc/yacc.ps} (2009-02-07)}",
}

@article{saltzer75,
	author = "Jerome~H. Saltzer and Michael~D. Schroeder",
	title = "\textit{The Protection of Information in Computer Systems}",
	journal = "Proceedings of the IEEE",
	volume = "63",
	number = "9",
	year = "1975",
	pages = "1278--1308",
	note = "Available on the Internet: {\small\url{http://web.mit.edu/Saltzer/www/publications/protection/} (2009-02-07)}",
}

@manual{sendmail:config,
	author = "Eric Allman",
	organization = "Sendmail Consortium, The",
	title = "\textit{Sendmail Configuration Files}",
	year = "2006",
	note = "Available on the Internet: {\small\url{http://sendmail.org/m4/readme.html} (2009-02-07)}",
}



@techreport{leister04,
	author = "Wolfgang Leister",
	title = "\textit{Hikernet: Peer-to-Peer Messaging in an Ad-Hoc Network}",
	institution = "Norsk Regnesentral",
	year = "2004",
	month = "December",
	number = "DART/10/04",
	note = "Available on the Internet: {\small\url{http://publications.nr.no/hikernet.pdf} (2009-02-08)}",
}