Other articles


  1. Projecting a basic world map

    Published: Tue 17 September 2019
    Updated: Tue 17 September 2019
    By Pontus Lurcock

    In blog.

    I’ve recently added a VGP map display to PuffinPlot. In principle, this is fairly straightforward to implement: the program produces a list of global locations (longitude and latitude pairs), and I needed to overlay these on a small wireframe world map.

    Since I needed to project my locations in …

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  2. Some simple spam rejection with exim4 ACLs

    I regularly receive email from a few persistent spammers who don't get caught by blackhole lists or Bayesian filters. Fortunately the spam I receive from them has enough consistent features that it can be rejected during the SMTP session at RCPT time, before the message content has been transferred. In …

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