The good old OGC WMS has many advantages compared to tiled maps: Continious zoom levels Support for different projections Combination of multiple layers in one request Higher resolutions for printing Better labelling No maintenance needed when updating data Well known disadvantages are scalability issues for high-traffic sites and a slower response time for complex maps. The second point can be significantly improved by using a technique known from the progressive JPEG format. Read on

If Spamassassin is reporting the following: 0.0 URIBL_BLOCKED ADMINISTRATOR NOTICE: The query to URIBL was blocked. # See # http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block # for more information. # [URIs: example.org] then you can check whether your dns forwarder is possibly blocked by URIBL: $ host -t TXT 2.0.0.127.multi.uribl.com # 2.0.0.127.multi.uribl.com descriptive text "Too many queries from 188.40.24.98. See http://uribl.com/about.shtml#abuse. Emails blocked due to this response are done so incorrectly. Please fix your software." The server in question is running at Hetzner and 188. Read on

QGIS Cloud and Sourcepole are proud to be official sponsors of the team Öcher-Safari, attending the Allgäu-Orient-Rallye. One of the last adventures in the world of cars. Sourcepole serves the team with know how, infrastructure and more. Information about the team and the charity ideas of this event you can find on Öcher-Safari and the official web site of the Allgäu-Orient-Rallye. Read on

We’ll be using Postgis2.0 from UbuntuGIS, which has packages for a number of recent Ubuntu releases. Since Ubuntu precise has libc6 2.14 and Debian wheezy only 2.13 we fall back on Ubuntu oneiric for packages, which also has libc6 2.13. However Postgis 2.0 in UbuntuGIS depends on a lot of llibraries which were in squeeze but live in wheezy under a higher version. Therefore we’ll install a lot of packages from Debian squeeze. Read on

Our favorite WFS-T server complement of UMN Mapserver is TinyOWS. We like the simplicity of it so much, that we packaged it for Ubuntu and added it to OSGeoLive. Installation is easy: sudo add-apt-repository ppa:ubuntugis/ubuntugis-unstable sudo apt-get update sudo apt-get install tinyows The simplicity is a little bit too much, when it comes to serve multiple WFS-T on the same server. There is only one configuration file, but we want a configuration for each service. Read on