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isoqlog on Git

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Latest Version: 2.2.1


What is Isoqlog?

Isoqlog is an MTA log analysis program written in C. It designed to scan qmail, postfix, sendmail and exim logfile and produce usage statistics in HTML format for viewing through a browser. It produces Top domains output according to Sender, Receiver, Total mails and bytes; it keeps your main domain mail statistics with regard to Days Top Domain, Top Users values for per day, per month and years.



Isoqlog 2.2.1 is released. Please see Changelog [Feb 27, 2005]


  • Multi MTA support(qmail (multilog and syslog), postfix, sendmail, exim)
  • Multi-domain support: Shows quite detailed statistics for not only your main domain, but also, any domain you want.
  • Displays statistics for common mail delivery errors.
  • For each domain you specify; displays Top incoming, outgoing, total and byte based statistics for users.
  • Displays server's activity based on incoming, outgoing, total mails and size of incoming mail, for domain and its users.
  • All days', all months', all years' activities ( above ones ) are stored for future inspection.
  • Multi-language Support ( Turkish, English, German,Portuguese,Spanish ,Italian,french, Swedish, Dutch, Polish, Norwegian, Russian,Czech,Romanian,Danish)

    Sample Output

    Sample output is provided here. Note that e-mails are scrabmled to avoid spammers leech e-mail addresses.


    You can see the ChangeLog file to see what has changed since the initial release.


    Development Version Local Site
    Isoqlog-2.2.1 Local Site
    Isoqlog-2.2 Local Site
    Isoqlog 2.1.1 Local Site or
    Isoqlog 2.1.1 Debian package Debian Site
    Isoqlog 2.1.1 Debian package Local
    Isoqlog 2.1.1 Rpm Package by Oden Eriksson

    Previous Versions

    You can get the older versions from here


    Read the INSTALL and FAQ documents as well as the README document to install and deploy Isoqlog


    Sorry, if you're using versions of Isoqlog older than 2.0; and want to use this version, you'll have to start with a clean install. Since we've changed the design and implementation in a radical way, there was no way to make the new release compatible with the previous ones.


    In Alphabetical Order

  • Atilim Boy [aboy at trunix dot org]
  • Baris Simsek [simsek at acikkod dot org]
  • Ismail Yenigul [ismail at enderunix dot org]
  • Murat Balaban [murat at enderunix dot org]
  • Omer Faruk Sen [ofsen at enderunix dot org]

    Mailing List

    You can subscribe to our mailing list.
    Send an blank mail to
    Mail archive is available at


    please send mail to: bug-report at EnderUNIX dot ORG


  • Sensei (debugged and profiled Isoqlog and gave brilliant
  • Murat Demirten (Debian Packages)
  • Oden Eriksson (RPM Packages)
  • All people who sent language files and tested Isoqlog

    (c) 2002, EnderUNIX Software Development Team Istanbul/Turkey