Users behind TOR abusing resources

For years, an unknown number of users behind TOR exit nodes have been abusing resources. Apparently for every email they receive, they query via the web, using the search interface open to all users. This causes considerable load on our webservers, the database servers, and our network infrastructure, sometimes causing significant delays for legitimate users.

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Change to PGP key

As of Nov 30 2015, there is a slight change to the PGP key we use for signing the download files – there is no more expiration date on that key. Private key and fingerprint remain unchanged.

The updated key can be downloaded here.

Improving IPv6 support has gradually improved the level of IPv6 support over the past months. The easy part is offering services over IPv6:

  • Most public websites are accessible over IPv6 (since well over a year)
  • Incoming and outgoing mails may pass through IPv6
  • Nameservers for both the and zones have a healthy mix of IPv4 and IPv6 (and georedundancy etc)
  • Monitoring adapted to include (hopefully) all services which are also offered over IPv6
  • As a general rule, and wherever available, internal communication between servers happens over IPv6

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