Post Mortem on a migration

Posted on: March 28th, 2026 by

The dust is settling..

The migration happened on Tuesday, and was for a large part successful. No data was harmed during the event. All data was migrated. Kolab Now is now running on hardware that has guaranteed warranty for at least the next 5 years, and on a software platform that is making it easier for us to develop and maintain.

We did however run into a very unfortunate situation. A few very urgent matters caused our support mailbox to be quite full, and on top of that, the support ticket form at ‘https://kolabnow.com/support’ was out of order for a few hours. This resulted in response times much longer than we like them to be.

A few issues impacted users:

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Migration postponed for 24 hours..

Posted on: March 23rd, 2026 by

As you can read in the update of the previous post on this blog, we ran into some unforeseen DNS issues during the migration, and were able to stop the actual migration in time. We found what we believe is the cause of the issues, and made changes to the configurations that we need to test.

At  the time of writing, we have postpone the migration until:

Tuesday March 24, 2026 @ 13:00 CET.

As it was the plan today, at 13:00 CET we will switch over the database and the main DNS.

This will cause downtime that can last up to 20 – 30 minutes.

We sincerely apologize for the inconvenience

Update 2026-03-24 @ 13:00 CET: The DNS issues from yesterday is under control. We are doing it. The migration is in progress.

Update 2026-03-24 @ 14:20 CET: The database has been migrated to the new environment. we are now updating the DNS. When DNS is updated, we can just wait for the global update. depending on where you are on the globe, this can take anywhere from a few minutes to 72 hours (just to mention the extremes). 

Update 2026-03-24 @ 15:30 CET: The migration has finished and all data is live on the new environment. We however hit a few issues; one certificate issue, one webclient defect, and DNS is slow to propagate in some areas (we know from user feedback). These issues should be resolved by now. At this time we are investigating some delays, but mail is flowing and getting delivered. Most of the issues are coming down to “restarting a browser or a Thunderbird”, but we resolve the tickets in Support as they come in. If you have issues that you do not read about here, then please contact Support.

 

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Final migration date and a new feature..

Posted on: March 12th, 2026 by

Final Migration date

As we get closer to the migration and we get ready, we now with confidence can set the actual final date for the migration to the new environment on the new hardware. The migration is going to happen on:

Monday 23rd of March 2026.

All systems are running well and our tests are successful. We are looking forward to using the new system.

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Incident report: Spam attack.. [Updated]

Posted on: March 6th, 2026 by

On Tuesday 2026-03-03, a number of user accounts on Kolab Now was used to send out large amounts of spam. The spammers didn’t get to send out much mail. Most of it was stopped in the Kolab Now exit filtering, but the spam rating of the mails going out unfortunately was high and caused Microsoft online services, specifically outlook.com, hotmail.com, to add two of the Kolab Now exit IP addresses to their block lists. This caused emails sent to recipients on these services to bounce with messages like:

550 5.7.1 Unfortunately, messages from [212.103.80.154] weren’t sent.

Please contact your Internet service provider since part of their network is on our block list (S3150).

The spammers were identified and stopped, but the damage was done.

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Doing things right…

Posted on: March 2nd, 2026 by

As you read in the previous post, Kolab Now is moving to new hardware. Over the past months we have put quite a portion of work into this project, and we are just about to be at the finish line.

To make absolutely sure that we are delivering the best possible service and minimal downtime during the migration window, we have decided to give our preparation at least one more week. This means that they migration to the new hardware will happen earliest on:

Monday, March 16, 2026.

The exact time plan with expected downtime will be announced ahead of the service window, but service interruptions are expected.

This blog will be available during the service window, and we will update it with status messages about the work.

We are looking forward to bid you welcome to the new infrastructure, and thank you in advance for your patience.

What’s going on?

Posted on: February 13th, 2026 by

It is Friday..

..and it is time to give you a short update on something that we have been working on for a while.

Kolab Now is running on high-end equipment located in a data-center in Bern, Switzerland. It is running the Email- and Groupware services for our customers, such as you. Where as we are aware that Email is ‘mission critical’ for our users, we do what we can to keep the service stable and alive 24/7.

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Transparency reporting..

Posted on: January 13th, 2026 by

For the sake of transparency we used to report on our interactions with authorities every year. Unfortunately we have missed a few of those reports. Some users missed such updates, and , not only for those users, but also according to our terms of service, and for the sake of transparency, we want to restart this good routine. This post is the transparency reporting for the year 2025.

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Jingle & Join: The Kolab Now Referral is ON (fire)

Posted on: December 5th, 2025 by

It is almost this time of the year again –  “one horse open sleigh” bells start to ring and the festive mood fills the air.

As always it is also the season of giving and this year giving privacy pays off 🙂

 

How it works

Share your personal Jingle&Join Referral Code with a friend and earn CHF 20 once your person/persons topped up their wallet with CHF 10 – offering 50% discount for the first 3 months of usage.*

Step by step

  1. Navigate to your wallet
  2. Find your personal Jingle&Join Referral Code (link)/ QR-Code
  3. Copy that link and send it out to your friends, offering them 50% discount for the first 3 months of usage
  4. For every successful sign-up with a topped up wallet of min. CHF 10, you earn CHF 20 (Kolab Now will add this to your wallet)

If you are still looking for a meaningful gesture during this Jingle bells season –  Jingle&Join Referral is ON.

Spread joy – not data

We wish everyone lovely pre-Christmas days.

 

*The Jingle&Join Referral Program will be active until 31.01.2025

 

Stay in Sync as a Family with Kolab Now

Posted on: November 21st, 2025 by

Running a family is a team effort! Between school schedules, grocery lists, birthdays, chores or appointments there is always something to remember – and to share.

A lot of parents choose big-tech apps for coordination, but with Kolab Now you can keep your family organized and your data private. Here is how you can use Kolab Now features like calendars, tasks and notes to stay perfectly in sync.

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