Author Archive for Jeroen van Meeuwen

Rate Limits Are A Thing Now

Posted on: April 15th, 2019 by

We’ve been dealing with quite a number of spammers whom register accounts with us, and start spamming third parties.

As you might imagine, our environment is geared toward redundancy and load-balancing and high traffic — hundreds of messages, thousands of recipients, every minute. The capabilities of our infrastructure are therefore in and by itself not limiting the rate at which anyone can send any number of messages to any number of recipients.

But, this is the case no longer per se.

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Incident Report: Cascading Performance Problems

Posted on: March 5th, 2019 by

From last Sunday afternoon onward, up to Monday evening and throughout the Monday night, performance problems have deteriorated the Kolab Now service up to and including services becoming unavailable.

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Our statistics for 2018

Posted on: December 31st, 2018 by

Our terms of service state there’s basically no way for anyone to get any access to your data without us also being able to talk about the fact it happened, and further down nested in our legal framework outline do we have a list of 3 general types under which individual requests could be filed.

I recall that some place, we also promise to at least publish the statistics. I don’t recall where, but I seem to remember we have. In any case, here’s our summary for 2018.

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Annual TLS Certificate Refresh

Posted on: December 28th, 2018 by

Our annual certificate refresh is coming up,with our TLS certificates expiring annually in January. December is included for a reasonable grace-period, because services will need to be switched over, which costs time.

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A Knowledge Base Reimagined

Posted on: November 18th, 2018 by

Hi there,

we updated our Knowledge Base yesterday with a more friendly, Kolab Now branded theme. Go over there and check it out.

Our October Silence?

Posted on: November 7th, 2018 by

Hi there,

I just wanted to provide you with a quick note that our blog roll’s “October silence” is nothing but just that. Some of us became a father to a son, have needed to deal with some citizen/resident paperwork, some of us choose to entertain the fresh snowfall way up the Alps, others took some vacation time, and such and so forth.

In the all-work-no-play area, I think we’ve figured out webmail decryption/signing, a responsive skin to be made available to mainstream Kolab Now, new exciting service venture definitions even though still under development, and we have now been able to deal with our midterm election anxiety (albeit November 25th could incur some implications domestically).

Incident Report: Thursday, 20:25 – Friday 01:15 UTC

Posted on: September 21st, 2018 by

Last night, a failure in the storage layer caused most of our services to be unavailable. In the week before, we replaced a failed hard drive. In the week before that, a so-called Virtual Fabric Adapter failed, causing a hypervisor to shut itself off. Since the most recent incident was the more serious downtime, that’s what we’ll start our reporting on.

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Collabora Online 3.2 for Kolab Now

Posted on: May 30th, 2018 by

Over the course of today, we’ve upgraded our environment to run Collabora Online 3.2. Having waited for a point in time where no collaborative editing sessions had been ongoing, no-one should have noticed any service interruption.

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Short-Form GDPR Compliance

Posted on: May 18th, 2018 by

Our team has received multiple inquiries about our service’s compliance with GDPR. We answer these individually, but here’s a short-form of the types of questions that we answer.

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Deprecation of TLS version 1.0

Posted on: May 9th, 2018 by

For most people, it’s been looming about pretty silently over the past few years, but TLS v1.0, the oldest and earliest version of Transport Layer Security is considered deprecated. The Payment Card Industry (PCI) data security standard (DSS) version 3.2 from April 2016 recommends full deprecation by the end of June 2018.

In compliance with these standards, while originating from the payment card industry, widely regarded to as a guiding standard for other industries, Kolab Now has disabled support for TLS v1.0.

Why? What does that mean?

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