Mail Lost between 18:00 2 Feb 2026 and 9:00 3 Feb 2026

We are working on replacing our incoming mailservers and something went wrong.

Due to an unexpected block in the mail flow, around 2800 mails which were queued from around 18:00 on Feb 2nd, were lost. The host queuing the mail, was replaced on Feb 3rd, around 8:30 and decommissioned at around 9:00. Unfortunately, the decommissioning also destroyed the disk of the server with the mail queue of around 2800 e-mails.

At 18:00 on Feb 2nd, two servers were accepting incoming mail, but only one of the servers was queuing, the other one was running as expected.

The queued mails where to be scanned for spam/malware by Microsoft EOP and then flow further.

These are the new mailservers with different software than before in order to better handle modern e-mail senders, we are focussed on correctly handling the incoming mails, and were not expecting not to be able to transfer mail further, since this was already tested and working well.

Unfortunately, this focus on the incoming side made us miss this issue with the next step, for which we are very sorry!