John Levine

Famous expert

Ithaca, New York

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John Levine, founder of Taughannock Networks, writes, speaks, and consults on e-mail, the Internet, and other computer topics. He has written over 20 technical books, and is the co-author of O'Reilly's lex & yacc, 2nd Edition and qmail. He's also deeply involved in Internet e-mail in general and spam issues in particular as co-chair of the Internet Research Task Force's Anti-Spam Research Group ( ) and a board member of the Coalition Against Unsolicited Commercial E-mail (

He lives and works in the tiny village of Trumansburg NY ( where he reports that being the municipal sewer commissioner was a much cleaner job than dealing with spammers.

Areas of Expertise:

  • compilers
  • e-mail
  • email
  • spam
  • security
  • consulting
  • speaking
  • writing


qmail by John Levine March 2004
lex & yacc by John Levine, Tony Mason, Doug Brown Second Edition October 1992